WO2022022249A1 - 资源调度方法及相关装置 - Google Patents

资源调度方法及相关装置 Download PDF

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Publication number
WO2022022249A1
WO2022022249A1 PCT/CN2021/104942 CN2021104942W WO2022022249A1 WO 2022022249 A1 WO2022022249 A1 WO 2022022249A1 CN 2021104942 W CN2021104942 W CN 2021104942W WO 2022022249 A1 WO2022022249 A1 WO 2022022249A1
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Prior art keywords
sub
discrete
subcarrier
resource
subcarriers
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PCT/CN2021/104942
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English (en)
French (fr)
Inventor
于健
李云波
梁丹丹
狐梦实
淦明
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华为技术有限公司
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Priority to EP21850410.8A priority Critical patent/EP4185047A4/en
Publication of WO2022022249A1 publication Critical patent/WO2022022249A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]

Definitions

  • the present application relates to the technical field of wireless local area networks, and in particular, to a resource scheduling method and related devices.
  • OFDMA orthogonal frequency division multiple access
  • a 20MHz channel may contain multiple resource units (RUs) in the form of 26-tone RU, 52-tone RU, 106-tone RU, and so on.
  • tone represents the number of subcarriers.
  • RU can also be in the form of 242-tone RU, 484-tone RU, 996-tone RU, etc. These RUs consist of one or two consecutive frequency domain resources. Such a way of RU allocation is too simple, and the reliability of RU transmission is low.
  • the embodiments of the present application provide a resource scheduling method and related apparatus, which can improve the reliability of RU transmission.
  • an embodiment of the present application provides a resource scheduling method, including: generating resource scheduling information based on a plurality of resource units into which frequency domain resources to be allocated are divided; the resource scheduling information includes: indicating one or more resource unit allocation information of multiple resource units and site information of a site to which the one or more resource units are allocated, wherein the one or more resource units allocated to a site include at least one discrete resource unit,
  • the discrete resource unit includes a plurality of subcarriers that are discrete in the frequency domain; or the discrete resource unit includes a plurality of subcarrier groups that are discrete in the frequency domain; one subcarrier group includes one subcarrier, or at least two subcarriers continuous subcarriers; sending the resource scheduling information.
  • an embodiment of the present application provides a method for obtaining resource scheduling information, including: receiving resource scheduling information, where the resource scheduling information includes: resource unit allocation information used to indicate one or more resource units and a resource to be allocated.
  • the discrete resource unit includes a plurality of discrete subcarrier groups in the frequency domain; one of the subcarrier groups includes one subcarrier, or at least two consecutive subcarriers; the resource is determined according to the resource scheduling information unit allocation.
  • an embodiment of the present application provides an apparatus for sending resource scheduling information, including a processing unit and a sending unit, where the processing unit is configured to generate resource scheduling information based on a plurality of resource units into which frequency domain resources to be allocated are divided;
  • the resource scheduling information includes: resource unit allocation information for indicating one or more resource units and site information of sites to which the one or more resource units are allocated, wherein the one or more resource units allocated to one site are
  • Each resource unit includes at least one discrete resource unit, and the discrete resource unit includes multiple sub-carriers that are discrete in the frequency domain; or the discrete resource unit includes multiple sub-carrier groups that are discrete in the frequency domain; one of the sub-carriers
  • the carrier group includes one subcarrier, or at least includes two consecutive subcarriers; the sending unit is used for sending the resource scheduling information.
  • an embodiment of the present application provides an apparatus for receiving resource scheduling information, including a receiving unit and a processing unit, the receiving unit is configured to receive resource scheduling information, and the resource scheduling information includes: used to indicate one or more resources The resource unit allocation information of the unit and the site information of the site to which the one or more resource units are allocated, wherein the one or more resource units allocated to a site include at least one discrete resource unit, the discrete resource unit Including multiple subcarriers discrete in the frequency domain; or the discrete resource unit includes multiple discrete subcarrier groups in the frequency domain; one subcarrier group includes one subcarrier, or at least includes two consecutive subcarriers a carrier; the processing unit is configured to determine the allocation of resource units according to the resource scheduling information.
  • the resource scheduling method of the first aspect of the present application can be implemented by the device for sending resource scheduling information in the third aspect, and the method for acquiring resource scheduling information in the second aspect of the present application can be implemented by the device for receiving resource scheduling information in the fourth aspect.
  • the apparatus for sending resource scheduling information in the third aspect of the present application may be understood as a communication apparatus, and the apparatus for sending resource scheduling information may be a station or an access point.
  • the apparatus for receiving resource scheduling information in the fourth aspect of the present application is understood as a communication apparatus, and the apparatus for sending the resource scheduling information may be a station or an access point.
  • discrete RUs are defined, and discrete RUs can be allocated to sites, that is, multiple subcarriers or multiple subcarrier groups that are discrete in the frequency domain can be allocated to a site, so that the site can be allocated discrete RUs.
  • the allocated frequency domain resources are more flexible and are not limited to one or two consecutive frequency domain resources, so that the frequency domain resources can be used more fully and flexibly, and the frequency diversity of the RUs allocated by a single user can be improved.
  • the subcarriers of the RU cover a wider frequency range, thereby improving the reliability of transmission.
  • one discrete resource unit includes at least 26 subcarriers.
  • consecutive RU refers to a RU composed of consecutive multiple subcarriers, or a continuous RU is a RU composed of two groups of consecutive subcarrier groups, and the multiple subcarriers included in the continuous subcarrier group in each group are consecutive , only the guard (Guard) subcarriers, null subcarriers, or direct current (direct current, DC) subcarriers are spaced between the two subcarrier groups.
  • All RUs supported in 802.11ax can be understood as continuous RUs.
  • Consecutive RUs may also be referred to as common RUs (common RUs, CRUs).
  • the name of the continuous RU may also be other names, and this application does not limit the name of the continuous RU.
  • the discrete RU includes N subcarriers.
  • the number of MHz occupied by the discrete RU is greater than the number of MHz occupied by the continuous RU with the number of subcarriers being N.
  • the minimum granularity of the MHz number is 1.
  • the number of MHz occupied by the discrete RU refers to the number of MHz occupied by the N subcarriers of the discrete RU.
  • the bandwidth includes multiple MHz. On one MHz, at least one sub-carrier of a discrete RU is distributed, even if the sub-carrier of the discrete RU does not occupy the one MHz, the one MHz is included in the number of MHz occupied by the discrete RU.
  • the maximum power spectral density refers to the maximum transmit power of 1MHz.
  • the minimum particle size for maximum power spectral density is 1 MHz. Without changing the transmit power of 1 MHz, for discrete RUs and continuous RUs including the same number of subcarriers, the number of MHz occupied by the discrete RUs is greater than the number of MHz occupied by the continuous RUs. In this way, under the condition of the same maximum power spectral density, the total transmit power of discrete RUs is higher than that of continuous RUs.
  • the transmit power of a single RU can be increased, thereby increasing the transmit power on a single subcarrier and improving the equivalent signal-to-noise ratio (Singal to noise ratio, SNR). .
  • the at least one discrete resource unit allocated to the one station includes pilot subcarriers.
  • a receiving apparatus eg, a station
  • receives the resource scheduling information can perform phase estimation based on the pilot subcarriers.
  • the position of the pilot subcarrier in the discrete resource unit is the same as the position when the pilot subcarrier is used as the pilot subcarrier in the continuous resource unit.
  • the position of the pilot subcarriers of the discrete RUs is the same as the positions of the pilot subcarriers in the continuous RUs, it is ensured that each discrete RU has pilot subcarriers, which can make the EHT-STF/EHT-LTF in the PPDU.
  • the sequence remains unchanged, realizing the mixed transmission of discrete RU and continuous RU, and can also enable the station to perform better phase correction.
  • the number of subcarriers spaced between two adjacent subcarrier groups is the same, so that the resource unit allocation information indicates the discrete resource unit It is also convenient for the receiving end to receive each subcarrier group.
  • the number of subcarriers spaced between two adjacent subcarrier groups is different, so that the allocation manner of frequency domain resources is more flexible.
  • a pair of adjacent subcarrier groups refers to two adjacent subcarrier groups of a discrete RU.
  • each subcarrier group includes the same number of subcarriers, so that the resource unit allocation information indicates the number of subcarriers in each subcarrier group. Or at least two subcarrier groups include different numbers of subcarriers, so that the allocation of frequency domain resources is more flexible.
  • the discrete RU includes multiple sub-RUs, each sub-RU includes 2 sub-carrier subgroups, and each sub-carrier subgroup includes multiple sub-carriers.
  • the index of the subcarrier in one subcarrier subgroup is odd, and the index of the subcarrier in the other subcarrier subgroup is even.
  • two adjacent subcarriers are separated by one subcarrier.
  • Each sub-RU of the plurality of sub-RUs includes at least one pilot sub-carrier. In this way, the pilot subcarriers are evenly distributed, which helps to improve the accuracy of phase correction.
  • Two adjacent subcarriers refer to two adjacent subcarriers of a discrete RU.
  • each of the multiple sub-RUs is located in a different 20MHz.
  • the subcarriers of a single RU cover a wider frequency range, so that the reliability of transmission can be more effectively improved.
  • the resource unit allocation information indicates an index of the discrete resource unit. Such an indication manner is simple, and a receiving apparatus (eg, a station) that receives resource scheduling information can more conveniently acquire the allocated discrete resource units.
  • the resource unit allocation information is used to indicate the index of the starting subcarrier and the subcarrier interval in the discrete resource unit; or the resource unit allocation information is used to indicate the discrete resource unit , the index of the ending subcarrier and the subcarrier spacing; or the resource element allocation information is used to indicate the index of the starting subcarrier, the index of the ending subcarrier and the subcarrier spacing in the discrete resource element; or the resource element indicates In the discrete resource unit, the index of each subcarrier.
  • the starting subcarrier is the subcarrier of the lowest frequency of the discrete resource unit
  • the ending subcarrier is the subcarrier of the highest frequency of the discrete resource unit.
  • the resource unit allocation information is used to indicate, in the discrete resource unit, the index of the first subcarrier in the starting subcarrier group, the number of subcarriers included in the subcarrier group, subcarrier group interval; or, the resource element allocation information is used to indicate, in the discrete resource element, the index of the last subcarrier in the starting subcarrier group, the number of subcarriers included in the subcarrier group, the subcarrier group interval; or, the resource unit allocation information is used to indicate, in the discrete resource unit, the index of the first subcarrier in the ending subcarrier group, the number of subcarriers included in the subcarrier group, and the subcarrier group interval; The resource unit allocation information is used to indicate, in discrete resource units, the index of the last subcarrier in the ending subcarrier group, the number of subcarriers included in the subcarrier group, and the subcarrier group interval.
  • the starting subcarrier group is the lowest frequency subcarrier group of the discrete unit, and the ending subcarrier group is the highest frequency subcarrier group of the discrete unit.
  • the subcarrier group interval is used to indicate the number of subcarriers spaced between two adjacent subcarrier groups. The number of guard sub-carriers, null sub-carriers and DC sub-carriers is not included.
  • the resource scheduling information further includes resource unit type indication information, where the resource unit type indication information is used to indicate whether the resource unit allocated to the station is a discrete resource unit or a continuous resource unit.
  • the RU type indication information may also be understood as discrete RU/continuous RU indication information.
  • the signaling field of the PPDU includes RU type indication information.
  • the signaling field of the PPDU includes a universal signaling field U-SIG (universal SIG, U-SIG) and an ultra-high throughput signaling field or an extremely high throughput signaling field (extremely high throughput, EHT-SIG).
  • U-SIG universal SIG
  • EHT-SIG extremely high throughput
  • EHT-SIG includes common fields and user-specific fields.
  • the U-SIG or the common field includes RU type indication information, which is used to indicate that the RUs included in the bandwidth are all discrete RUs or are all continuous RUs.
  • RU type indication information indicates that the RUs included in the bandwidth are all discrete RUs
  • the bandwidth may include only discrete RUs, or may include discrete RUs and special continuous RUs.
  • the user field includes RU type indication information, which is used to indicate that the RU allocated by the station corresponding to the user field is a discrete RU or a continuous RU.
  • the bandwidth can support mixed transmission of discrete RUs and continuous RUs, that is, the bandwidth can include both discrete RUs and continuous RUs.
  • the RU type indication information in the user field enables the receiving end to determine whether the allocated RU is a discrete RU or a continuous RU, so that the receiving end (such as a station) can follow the corresponding relationship between discrete RUs or continuous RUs and subcarriers, Read the resource unit allocation information to accurately obtain the subcarrier range allocated to its own resource unit.
  • the trigger frame sent by the access point to the station includes RU type indication information.
  • the trigger frame includes a common field and a user information list field.
  • the common field in the trigger frame includes RU type indication information.
  • RU type indication information indicates that the RUs included in the bandwidth are all discrete RUs, the bandwidth may include only discrete RUs, or may include discrete RUs and special continuous RUs.
  • the trigger frame includes a user information list field
  • the user information list field includes one or more user fields
  • the user field includes RU type indication information, which is used to indicate that the user field corresponds to the site allocated.
  • RU is discrete RU or continuous RU.
  • the bandwidth can support mixed transmission of discrete RUs and continuous RUs, that is, the bandwidth can include both discrete RUs and continuous RUs.
  • the RU type indication information in the user field enables the receiving end to determine whether the allocated RU is a discrete RU or a continuous RU, so that the receiving end can obtain resource unit allocations according to the correspondence between discrete RUs or continuous RUs and subcarriers information to accurately obtain the subcarrier range allocated to its own resource unit.
  • an embodiment of the present application further provides a communication device, the communication device may include: a processor, a transceiver, and optionally a memory, when the processor executes the computer program or instructions in the memory , so that the method of any one of the first aspect, the second aspect, the fifth aspect, the sixth aspect, the ninth aspect or the tenth aspect is performed.
  • embodiments of the present application further provide a computer-readable storage medium, where computer instructions are stored in the computer-readable storage medium, and the computer instructions instruct a communication device to perform any implementation of the first aspect and the second aspect above method method.
  • an embodiment of the present application further provides a computer program product, the computer program product includes a computer program, when the computer program is run on a computer, the computer is made to execute the above-mentioned first aspect, second aspect, The method of any embodiment of the fifth, sixth, ninth or tenth aspect.
  • the present application further provides a processor configured to execute any one of the methods of the first aspect and the second aspect.
  • the process of sending and receiving the above-mentioned information in the above-mentioned methods can be understood as the process of outputting the above-mentioned information by the processor, and the process of receiving the above-mentioned information input by the processor.
  • the processor when outputting the above-mentioned information, the processor outputs the above-mentioned information to the transceiver for transmission by the transceiver. Furthermore, after the above information is output by the processor, other processing may be required before reaching the transceiver.
  • the transceiver receives the above-mentioned information and inputs it into the processor. Furthermore, after the transceiver receives the above-mentioned information, the above-mentioned information may need to perform other processing before being input to the processor.
  • the operations of transmitting, sending and receiving involved in the processor can be understood more generally as
  • the processor outputs and receives, inputs, etc. operations, rather than the transmit, transmit, and receive operations directly performed by the radio frequency circuit and antenna.
  • the above-mentioned processor may be a processor specially used to execute these methods, or may be a processor that executes computer instructions in a memory to execute these methods, such as a general-purpose processor.
  • the above-mentioned memory can be a non-transitory (non-transitory) memory, such as a read-only memory (read only memory, ROM), which can be integrated with the processor on the same chip, or can be respectively arranged on different chips, the present invention
  • ROM read-only memory
  • the embodiment does not limit the type of the memory and the setting manner of the memory and the processor.
  • the present application provides a chip system
  • the chip system includes a processor and an interface, and is used for supporting a communication transmission device to implement the functions involved in the method of any one of the first to fourth aspects, for example, determining Or process at least one of the data and information involved in the above method.
  • the chip system further includes a memory for storing necessary information and data of the aforementioned communication device.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • the present application provides a functional entity for implementing the methods described in the first and second aspects above.
  • FIG. 1 is a schematic diagram of a network architecture of a communication system involved in an embodiment of the application
  • FIG. 2 is a schematic structural diagram of a communication device involved in an embodiment of the present application
  • FIG. 3 is a schematic structural diagram of a chip according to an embodiment of the present application.
  • 4A is a schematic diagram of a possible allocation manner of resource units at 20MHz
  • 4B is a schematic diagram of a possible allocation manner of resource units at 40MHz
  • 4C is a schematic diagram of a possible allocation manner of resource units at 80MHz
  • FIG. 5 is a schematic flowchart of a resource scheduling method according to an embodiment of the present application.
  • 6A is a schematic diagram of resource unit allocation according to an embodiment of the present application.
  • 6B is a schematic diagram of resource unit allocation according to an embodiment of the present application.
  • FIG. 6D is a schematic diagram of resource unit allocation according to an embodiment of the present application.
  • 6E is a schematic diagram of resource unit allocation according to an embodiment of the present application.
  • FIG. 7 is a schematic diagram of resource unit allocation according to an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a PPDU
  • FIG. 9 is a schematic diagram of a transmission process of PPDU
  • FIG. 10 is a schematic structural diagram of an apparatus for sending resource scheduling information according to an embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of an apparatus for receiving resource scheduling information according to an embodiment of the present application.
  • the embodiments of the present application provide a resource scheduling method for a wireless communication system.
  • the wireless communication system can be a wireless local area network (Wireless local area network, WLAN) or a cellular network, and the method can be implemented by a communication device in the wireless communication system or a chip or a processor in the communication device.
  • the communication device supports the use of IEEE 802.11 series protocols for communication, IEEE 802.11 series protocols include: 802.11be, 802.11ax, or 802.11a/b/g/n/ac.
  • FIG. 1 is a schematic diagram of a network structure provided by an embodiment of the present application.
  • the network structure may be a wireless local area network, and the network structure may include one or more access point (access point, AP) sites and one or more non-contact Access point class site (none access point station, non-AP STA).
  • access point access point
  • non-AP STA non-contact Access point class site
  • the access point type station is referred to as an access point (AP) herein
  • the non-access point type station is referred to as a station (STA).
  • the APs are, for example, AP1 and AP2 in FIG. 1
  • the STAs are, for example, STA1 and STA2 in FIG. 1 .
  • the access point can be the access point for terminal equipment (such as mobile phone) to enter the wired (or wireless) network. It is mainly deployed in homes, buildings and campuses, with a typical coverage radius ranging from tens of meters to hundreds of meters. Can be deployed outdoors.
  • the access point is equivalent to a bridge connecting the wired network and the wireless network.
  • the main function is to connect the various wireless network clients together, and then connect the wireless network to the Ethernet.
  • the access point may be a terminal device (such as a mobile phone) or a network device (such as a router) with a wireless fidelity (wreless-fidelity, WiFi) chip.
  • the access point can be a device that supports the 802.11be standard.
  • the access point may also be a device that supports multiple wireless local area networks (WLAN) standards of the 802.11 family, such as 802.11be, 802.11ax, 802.11ac, 802.11n, 802.11g, 802.11b, and 802.11a.
  • WLAN wireless local area networks
  • the access point in this application may be an extremely high throughput (Extramely High Throughput, EHT) AP, or may be an access point applicable to a certain generation of WiFi standards in the future.
  • EHT extremely high throughput
  • the access point may include a processor and a transceiver, where the processor is used to control and manage actions of the access point, and the transceiver is used to receive or send information.
  • the station may be a wireless communication chip, a wireless sensor or a wireless communication terminal, etc., and may also be called a user.
  • a site can be a mobile phone that supports WiFi communication, a tablet that supports WiFi communication, a set-top box that supports WiFi communication, a smart TV that supports WiFi communication, a smart wearable device that supports WiFi communication, or a smart wearable that supports WiFi communication. Vehicle communication equipment and computers that support WiFi communication functions, etc.
  • the site can support the 802.11be standard.
  • the station can also support multiple wireless local area networks (WLAN) systems of the 802.11 family, such as 802.11be, 802.11ax, 802.11ac, 802.11n, 802.11g, 802.11b, and 802.11a.
  • WLAN wireless local area networks
  • the station may include a processor and a transceiver, the processor is used to control and manage the actions of the access point, and the transceiver is used to receive or transmit information.
  • the access point in the present application may be an extremely high throughput (extramely high throughput, EHT) STA, or may be an STA applicable to a future generation WiFi standard.
  • EHT extremely high throughput
  • access points and sites can be devices used in the Internet of Vehicles, IoT nodes, sensors, etc. in the Internet of Things (IoT), smart cameras in smart homes, smart remote controls, smart water meters, and electricity meters. And sensors in smart cities, etc.
  • IoT Internet of Things
  • the access points and sites involved in the embodiments of the present application may also be collectively referred to as communication devices, which may include hardware structures and software modules, and implement the above functions in the form of hardware structures, software modules, or hardware structures plus software modules .
  • a certain function of the above functions may be implemented in the form of a hardware structure, a software module, or a hardware structure plus a software module.
  • FIG. 2 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • the communication apparatus 200 may include: a processor 201 , a transceiver 205 , and optionally a memory 202 .
  • the communication device can be used as a device for sending resource scheduling information, and can also be used as a device for receiving resource scheduling information.
  • the transceiver 205 may be referred to as a transceiver unit, a transceiver, or a transceiver circuit, etc., for implementing a transceiver function.
  • the transceiver 205 may include a receiver and a transmitter, the receiver may be called a receiver or a receiving circuit, etc., for implementing a receiving function; the transmitter may be called a transmitter or a transmitting circuit, etc., for implementing a transmitting function.
  • the processor 201 can control the MAC layer and the PHY layer by running the computer program or software code or instruction 203 therein, or by calling the computer program or software code or instruction 204 stored in the memory 202, so as to realize the following aspects of the present application.
  • the resource scheduling method provided by the embodiment.
  • the processor 201 can be a central processing unit (central processing unit, CPU), and the memory 202 can be, for example, a read-only memory (read-only memory, ROM), or a random access memory (random access memory, RAM).
  • the processor 201 and transceiver 205 described in this application may be implemented in integrated circuits (ICs), analog ICs, radio frequency integrated circuits (RFICs), mixed-signal ICs, application specific integrated circuits (ASICs), printed circuits board (printed circuit board, PCB), electronic equipment, etc.
  • ICs integrated circuits
  • RFICs radio frequency integrated circuits
  • ASICs application specific integrated circuits
  • PCB printed circuits board
  • electronic equipment etc.
  • the above-mentioned communication apparatus 200 may further include an antenna 206, and each module included in the communication apparatus 200 is only for illustration, which is not limited in this application.
  • the communication apparatus 200 described in the above embodiments may be an access point or a station, but the scope of the communication apparatus described in this application is not limited thereto, and the structure of the communication apparatus may not be limited by FIG. 2 .
  • the communication apparatus may be a stand-alone device or may be part of a larger device.
  • the implementation form of the communication device may be:
  • Independent integrated circuit IC or chip, or, chip system or subsystem
  • a set of one or more ICs, optionally, the IC set may also include storage for storing data and instructions components; (3) modules that can be embedded in other devices; (4) receivers, smart terminals, wireless devices, handsets, mobile units, in-vehicle devices, cloud devices, artificial intelligence devices, etc.; (5) others, etc. .
  • the chip shown in FIG. 3 includes a processor 301 and an interface 302 .
  • the number of processors 301 may be one or more, and the number of interfaces 302 may be multiple.
  • the interface 302 is used for signal reception and transmission.
  • the chip or chip system may include memory 303 .
  • the memory 303 is used to store necessary program instructions and data of the chip or the chip system.
  • Orthogonal frequency division multiple access may be used between the AP and the STA.
  • the WLAN protocol divides the spectrum bandwidth into several resource units (RUs).
  • the 802.11ax standard stipulates that for bandwidths of 20MHz, 40MHz, 80MHz, and 160MHz, the bandwidth can be divided into multiple types of RUs. 484-tone RU, 996-tone RU, etc.
  • tone represents a subcarrier, for example, a 26-tone RU represents an RU that includes 26 consecutive subcarriers, or an RU that includes a group of 13 consecutive subcarriers and another group of 13 consecutive subcarriers.
  • the 802.11be standard follows the above-mentioned resource allocation method of dividing the bandwidth into several resource units. For 20MHz, 40MHz, 80MHz, 160MHz, and 320MHz, the spectrum bandwidth can be divided into multiple types of RUs, and the size of RUs can be 26-tone RU, 52-tone RU, 106-tone RU, 242-tone RU, 484-tone RU, 996-tone RU, etc.
  • the 26-tone RU can be assigned to a user for use. Generally speaking, an RU greater than or equal to 242-tone can be allocated to one or more users.
  • a user in this application may be understood as a STA.
  • the RUs in the bandwidth include data (Data) subcarriers and pilot (Pilot) subcarriers.
  • the data subcarrier is used to carry the data information from the upper layer; the pilot subcarrier conveys a fixed value and is used by the receiver to estimate the phase and perform phase correction.
  • FIG. 4A is a schematic diagram of a possible allocation manner of resource units when the bandwidth is 20 MHz.
  • the entire 20MHz bandwidth can be composed of the entire 242-tone RU, or it can be composed of various combinations of 26-tone RU, 52-tone RU, and 106-tone RU.
  • the continuous RU whose bandwidth is used to transmit data, it also includes some guard (Guard) sub-carriers, null sub-carriers, or direct current (DC) sub-carriers.
  • Guard guard
  • null sub-carriers null sub-carriers
  • DC direct current
  • FIG. 4B is a schematic diagram of a possible allocation manner of resource units when the bandwidth is 40MHz.
  • the entire bandwidth is roughly equivalent to a replica of the sub-carrier distribution of 20 MHz.
  • the entire 40MHz bandwidth can be composed of the entire 484-tone RU, or it can be composed of various combinations of 26-tone RU, 52-tone RU, 106-tone RU, 242-tone RU.
  • FIG. 4C a schematic diagram of a possible allocation manner of resource units when the bandwidth is 80 MHz is shown.
  • the entire bandwidth is roughly equivalent to a replica of two 40MHz subcarrier distributions.
  • the entire 80MHz bandwidth can be composed of an entire 996-tone RU, or it can be composed of various combinations of 484-tone RU, 242-tone RU, 106-tone RU, 52-tone RU, and 26-tone RU.
  • the entire bandwidth can be regarded as a copy of the distribution of two 80MHz sub-carriers.
  • the entire bandwidth can be composed of a whole 2*996-tone RU, or 26-tone RU, 52-tone RU RU, 106-tone RU, 242-tone RU, 484-tone RU, 996-tone RU of various combinations.
  • 2*996-tone RU is an RU composed of two consecutive 996-tone RU subcarriers.
  • the entire bandwidth can be regarded as a copy of the distribution of two 160MHz sub-carriers.
  • the entire bandwidth can be composed of a whole 4*996-tone RU, or it can be composed of various combinations of 26-tone RU, 52-tone RU, 106-tone RU, 242-tone RU, 484-tone RU, 996-tone RU composition.
  • the subcarrier range of the RU on the bandwidth and the position of the pilot subcarrier are listed below in combination with the table.
  • RUX is the RU index
  • [a,b] represents the subcarrier range of the RU is from subcarrier index a to subcarrier index b, including a and b themselves; ⁇ x,y,... ⁇ in where x, y, ... are the indices of pilot subcarriers.
  • the subcarrier whose index is x is expressed as subcarrier x.
  • the 26-tone RUs on the bandwidth can be any one or more of RU1-RU9 in the row where the 26-tone RUs are located in Table 1.
  • Each 26-tone RU includes 2 pilot subcarriers.
  • the 26-tone RU in the bandwidth is RU1 in the row where the 26-tone RU is located in Table 1, and the subcarrier range of the 26-tone RU is subcarrier-121 to subcarrier-96, where subcarrier-116 and subcarriers-102 are pilot subcarriers.
  • the 52-tone RU on the bandwidth may be any one or more of RU1-RU4 in the row where the 52-tone RU is located in Table 1.
  • Each 52-tone RU includes 4 pilot subcarriers.
  • the 52-tone RU in the bandwidth is RU1 in the row where the 52-tone RU is located in Table 1, and the subcarrier range of the 52-tone RU is subcarrier-121 to subcarrier-70, wherein, subcarrier-116 , Subcarrier-102, Subcarrier-90, and Subcarrier-76 are pilot subcarriers.
  • the 106-tone RU in the bandwidth can be any one or more of RU1-RU2 in the row where the 106-tone RU is located in Table 1.
  • Each 106-tone RU includes 4 pilot subcarriers.
  • the subcarrier range of the RU1 is subcarrier-122 to subcarrier-17, wherein subcarrier-116, subcarrier-90, subcarrier-48, and subcarrier-22 are pilot subcarriers.
  • the subcarrier range of the RU2 is subcarrier 17-subcarrier 122, wherein subcarrier 22, subcarrier 48, subcarrier 90, and subcarrier 116 are pilot subcarriers.
  • a 242-tone RU in bandwidth is a 242-tone RU1 that can be in Table 1.
  • the subcarrier ranges for 242-tone RU1 are subcarrier-122 to subcarrier-2, and subcarrier 2 to subcarrier 122, where subcarriers -116, subcarrier-90, subcarrier-48, subcarrier-22, subcarrier 22, subcarrier 48, subcarrier 90, subcarrier 116 are pilot subcarriers.
  • the 26-tone RUs on the bandwidth may be one or more of RU1-RU18 in the row where the 26-tone RUs are located in Table 2.
  • Each 26-tone RU includes 2 pilot subcarriers.
  • the 26-tone RU in the bandwidth is RU1 in the row where the 26-tone RU is located in Table 2, and the subcarrier range of the 26-tone RU is subcarrier-243 to subcarrier-218, where subcarrier-238 and subcarriers-224 are pilot subcarriers.
  • the 52-tone RU on the bandwidth may be one or more of RU1-RU8 in the row where the 52-tone RU is located in Table 2.
  • Each 52-tone RU includes 4 pilot subcarriers.
  • the 52-tone RU in the bandwidth is RU1 in the row where the 52-tone RU is located in Table 2, and the subcarrier range of the 52-tone RU is subcarrier-243 to subcarrier-192, wherein, subcarrier-238 , subcarrier-224, subcarrier-212 and subcarrier-198 are pilot subcarriers.
  • the 106-tone RU in the bandwidth can be any one or more of RU1-RU4 in the row where the 106-tone RU is located in Table 2.
  • Each 106-tone RU includes 4 pilot subcarriers.
  • the 242-tone RU on the bandwidth may be one or more of RU1 and RU2 in the row where the 242-tone RU in the first column is located in Table 2.
  • the 484-tone RU on the bandwidth can be RU1 in the row where the 484-tone RU in the first column is located in Table 2.
  • the standard also specifies the RU that may be included in the bandwidth, the subcarrier range corresponding to the possibly included RU, and the pilot subcarrier. Not listed here.
  • the 26-tone RUs, 52-tone RUs, 106-tone RUs, 242-tone RUs, and 484-tone RUs in the above Tables 1 and 2 are RUs composed of consecutive multiple subcarriers, or two consecutive groups of subcarriers.
  • a RU formed by a carrier group, such a RU can be understood as a continuous RU.
  • the existing allocation of resource units only supports the allocation of consecutive RUs to one or more users, the resource unit allocation method is too simple, and the reliability of resource unit transmission is low.
  • the embodiments of the present application provide a resource allocation scheme based on discrete RUs, which can improve the reliability of resource unit transmission.
  • the continuous RU in this application refers to a RU composed of consecutive multiple subcarriers, or a continuous RU is a RU composed of two groups of consecutive subcarrier groups, and the multiple subcarriers included in the continuous subcarrier group in each group are consecutive , only the guard (Guard) subcarriers, null subcarriers, or direct current (direct current, DC) subcarriers are spaced between the two subcarrier groups.
  • All RUs supported in 802.11ax can be understood as continuous RUs.
  • Consecutive RUs may also be referred to as common RUs (common RUs, CRUs).
  • the name of the continuous RU may also be other names, and this application does not limit the name of the continuous RU.
  • the discrete RU in this application includes multiple subcarriers that are discrete in the frequency domain.
  • the discrete multiple sub-carriers may be partially discrete or completely discrete. That is to say, the discrete multiple sub-carriers may include a part of the sub-carriers that are continuous in frequency, and include a part of the sub-carriers that are discontinuous in frequency; the discrete multiple sub-carriers may also be completely discontinuous in frequency. .
  • the discrete RU includes multiple sub-carrier groups that are discrete in the frequency domain, and one sub-carrier group includes one sub-carrier or multiple consecutive sub-carriers.
  • the number of subcarriers included in each subcarrier in the multiple subcarrier groups may be the same or different.
  • the number of subcarriers in each subcarrier group may be 1.
  • 4 subcarrier groups may be included, and the number of subcarriers in the 4 subcarrier groups may be 7, 7, 6, and 6 in sequence. .
  • Discrete RU can also be called (discontiguous RU, DRU).
  • the discrete RU may also have other names, and this application does not limit the name of the discrete RU.
  • the number of subcarrier groups included in a discrete RU in this application is greater than 2.
  • the RU shown in the existing resource allocation manner that only includes two groups of consecutive subcarrier groups is not the discrete RU involved in the embodiment of the present application.
  • a 26-tone RU composed of a group of 13 consecutive subcarriers and another group of 13 consecutive subcarriers (for example, RU5 in the row where the 26-tone RU is located in Table 1) is a continuous RU instead of a discrete RU.
  • a 242-tone RU composed of a group of 121 consecutive subcarriers and another group of 121 consecutive subcarriers (for example, RU1 in the row where the 242-tone RU in Table 1 is located) is a continuous RU instead of a discrete RU.
  • a 484-tone RU composed of a group of contiguous 242 subcarriers and another group of contiguous 242 subcarriers is a continuous RU instead of a discrete RU.
  • a 996-tone RU consisting of a set of 484 consecutive subcarriers and another set of 484 consecutive subcarriers is a continuous RU rather than a discrete RU.
  • Such RUs may also be called special continuous RUs or generalized continuous RUs.
  • the resource allocation scheme of the embodiment of the present application may be implemented by the resource scheduling method of the embodiment of the present application.
  • the resource scheduling method includes:
  • An access point generates resource unit scheduling information based on a plurality of RUs into which frequency domain resources to be allocated are divided.
  • the resource scheduling information includes: resource unit allocation information for indicating one or more RUs, and site information of sites to which the one or more RUs are allocated, wherein one site is allocated among the one or more RUs , including at least one discrete RU.
  • the frequency domain resource to be allocated may be a complete bandwidth, or may be a frequency domain resource that is not punctured in the bandwidth.
  • the one or more RUs allocated to a site include at least one discrete RU, which means that the site may be allocated only one discrete RU, multiple discrete RUs, or at least one discrete RU. RU and at least one consecutive RU.
  • the access point sends the resource scheduling information.
  • the station receives the scheduling information.
  • the resource unit scheduling information may be carried in a signaling field of a physical layer protocol data unit (PHY protocol data unit, PPDU).
  • the signaling includes resource element allocation subfield and user field.
  • the resource unit allocation subfield indicates resource unit allocation information for one or more RUs.
  • the user field includes site information for the site to which the one or more RUs are assigned.
  • the resource unit scheduling information may also be carried in the user field of the trigger frame.
  • the station determines one or more RUs allocated to itself according to the resource unit scheduling information.
  • the station determines the allocation of resource units according to the resource scheduling information. Specifically, a station can determine, according to its own site information and resource unit allocation information, the number of subcarriers included in the one or more RUs allocated by itself, and the positions of the RUs in the bandwidth.
  • the distribution of the subcarriers of the RU in the bandwidth is specified by the standard.
  • the station can determine the subcarriers of the one or more RUs allocated by itself in the bandwidth according to the number of subcarriers of the one or more RUs allocated by itself and the positions of the one or more RUs allocated by itself in the bandwidth. Location.
  • discrete RUs can be allocated to sites, that is, multiple subcarriers or groups of subcarriers that are discrete in the frequency domain can be allocated to a site, so that the frequency domain resources allocated to the site are more flexible , not limited to one or two consecutive frequency domain resources, so that frequency domain resources can be used more fully and flexibly, the frequency diversity of RUs allocated to a single user is improved, and the frequency range covered by the subcarriers of a single RU is wider. It can improve the reliability of transmission.
  • the above resource scheduling method is described with the embodiment in which the AP sends resource scheduling information to the STA, and the method is also applicable to the scenario where the AP sends the resource scheduling information to the AP, and the STA sends the resource scheduling information to the STA.
  • the discrete RU includes N subcarriers.
  • the number of MHz occupied by the discrete RU is greater than the number of MHz occupied by the continuous RU with the number of subcarriers being N.
  • the minimum granularity of the MHz number is 1.
  • the number of MHz occupied by the discrete RU refers to the number of MHz occupied by the N subcarriers of the discrete RU.
  • the bandwidth includes multiple MHz. On one MHz, at least one sub-carrier of a discrete RU is distributed, even if the sub-carrier of the discrete RU does not occupy the one MHz, the one MHz is included in the number of MHz occupied by the discrete RU.
  • the 26 subcarriers of a discrete 26-tone RU include 4 subcarrier groups.
  • the 1st to 7th subcarriers are continuous, and the 1st to 7th subcarriers are a subcarrier group; -14 subcarriers are consecutive, the 8th-14th subcarriers are a subcarrier group; the 15th-20th subcarriers are consecutive, the 15th-20th subcarriers are a subcarrier group, and the 21st-26th subcarriers are consecutive Yes, the 21st-26th subcarriers are a subcarrier group.
  • the number of MHz occupied by the discrete 26-tone RU is 4MHz.
  • the maximum transmitted power and maximum power spectral density are limited. Compared with the maximum power, the limit of the maximum power spectral density is more stringent, and the maximum power allowed to transmit is usually more limited by the power spectral density. Limited by the maximum power spectral density, the transmit power of a single continuous RU is limited.
  • LPI Low Power Indoor
  • the maximum power spectral density refers to the maximum transmit power of 1MHz.
  • the minimum particle size for maximum power spectral density is 1 MHz. Without changing the transmit power of 1 MHz, for discrete RUs and continuous RUs including the same number of subcarriers, the number of MHz occupied by the discrete RUs is greater than the number of MHz occupied by the continuous RUs. In this way, under the condition of the same maximum power spectral density, the total transmit power of discrete RUs is higher than that of continuous RUs.
  • the transmit power of a single RU can be increased, thereby increasing the transmit power on a single subcarrier and improving the equivalent signal-to-noise ratio (Singal to noise ratio, SNR). .
  • a resource unit allocated to a station includes at least one discrete RU, and the station can use the at least one discrete RU for uplink transmission.
  • the total transmit power of a discrete RU can be greater than the total transmit power of a continuous RU with the same size as the discrete RU, so that the maximum power spectral density can be increased without increasing the maximum power spectral density.
  • the transmit power of the RU can be understood as the continuous RU with the same number of subcarriers as the discrete RU.
  • At least one discrete RU allocated to a site includes pilot subcarriers.
  • the station can estimate the phase according to the pilot subcarrier and perform phase correction.
  • the following provides a distribution manner of subcarriers of some discrete RUs.
  • the number of subcarriers spaced between two adjacent subcarrier groups is the same, and each subcarrier group includes one subcarrier.
  • a pair of adjacent subcarrier groups refers to two adjacent subcarrier groups of a discrete RU.
  • adjacent subcarriers refer to two adjacent subcarriers of a discrete RU. carrier.
  • the number of subcarriers spaced between two adjacent subcarriers may be spaced by 1 subcarrier, 2 subcarriers, or 3 subcarriers.
  • the number of subcarriers spaced between two adjacent subcarrier groups is the number of subcarriers belonging to other RUs spaced between two adjacent subcarrier groups.
  • the subcarriers spaced between adjacent subcarrier groups may not include guard subcarriers, null subcarriers, and DC subcarriers in the continuous RU scenario; the number of subcarriers spaced between adjacent subcarrier groups also The numbers of guard sub-carriers, null sub-carriers and DC sub-carriers spaced between adjacent sub-carrier groups are not included.
  • the subcarriers spaced between two adjacent subcarrier groups may include guard subcarriers, null subcarriers, and DC subcarriers in a continuous RU scenario; the number of subcarriers spaced between two adjacent subcarrier groups It may include the number of guard subcarriers, null subcarriers and DC subcarriers spaced between two adjacent subcarrier groups.
  • a continuous RU scenario may be understood as a scenario in which frequency domain resources are divided into one or more consecutive RUs, for example, a scenario in which RUs are divided according to the manners of FIG. 4A to FIG. 4C .
  • one discrete RU includes at least one pilot subcarrier.
  • the positions of pilot subcarriers in a discrete RU in the bandwidth may be different from the positions in the bandwidth of pilot subcarriers of consecutive RUs in the same bandwidth.
  • the pilot subcarriers of consecutive RUs may be subcarrier-116, subcarrier-102, subcarrier-90, subcarrier-76, subcarrier-62, subcarrier- 48, at least one of subcarrier-36, subcarrier-22, subcarrier-10, subcarrier 10, subcarrier 22, subcarrier 36, subcarrier 48, subcarrier 62, subcarrier 76, and subcarrier 90; bandwidth
  • the pilot subcarriers of discrete RUs are not necessarily pilot subcarriers at these locations.
  • each subcarrier group includes one subcarrier.
  • the discrete RU can also be described as including a plurality of sub-carriers that are discrete in the frequency domain.
  • a discrete RU includes a plurality of sub-carriers that are discrete in the frequency domain, and the number of sub-carriers at the interval between two adjacent sub-carrier groups is three. That is, among the N subcarriers of the discrete RU, there are 3 subcarriers between adjacent subcarriers. In this way, for a discrete RU and a continuous RU containing the same number of subcarriers, the megahertz number occupied by the discrete RU is 4 times the megahertz number occupied by the continuous RU, so that the transmit power of the discrete RU can be greater than that of the continuous RU transmission power.
  • a discrete 26-tone RU For a discrete 26-tone RU, two adjacent subcarriers in the 26 subcarriers are separated by 3 subcarriers.
  • the number of megahertz occupied by such a discrete 26-tone RU is 8 megahertz.
  • the number of megahertz occupied by a continuous 26-tone RU is 2 megahertz. In this way, the number of megahertz occupied by discrete 26-tone RUs is greater than the number of megahertz occupied by continuous 26-tone RUs, which can make the transmit power of discrete 26-tone RUs greater than that of continuous 26-tone RUs.
  • spaced subcarriers may not be allocated to any site, or may belong to subcarriers of discrete RUs allocated to another site.
  • each subcarrier group includes one subcarrier, and the number of subcarriers in the interval between two adjacent subcarrier groups is one. That is, among the N subcarriers of the discrete RU, two adjacent subcarriers are separated by one subcarrier. In this way, for a discrete RU and a continuous RU containing the same number of subcarriers, the megahertz number occupied by the discrete RU is twice the megahertz number occupied by the continuous RU, so that the transmit power of the discrete RU can be greater than that of the continuous RU transmission power.
  • the number of megahertz occupied by such a discrete 26-tone RU is 4 megahertz.
  • the number of megahertz occupied by a continuous 26-tone RU is only 2 megahertz. In this way, the number of megahertz occupied by discrete 26-tone RUs is greater than the number of megahertz occupied by continuous 26-tone RUs, which can make the transmit power of discrete 26-tone RUs greater than that of continuous 26-tone RUs.
  • the position of the pilot sub-carrier in the discrete resource unit is the same as the position of the pilot sub-carrier when the pilot sub-carrier is used as the pilot sub-carrier in the continuous resource unit.
  • the same position in the bandwidth In this way, the sequence of extremely high throughput short training field (EHT-STF) and EHT long training field (EHT-LTF) in the PPDU can be kept unchanged, realizing discrete RU and continuous RU mixed pass.
  • EHT-STF extremely high throughput short training field
  • EHT-LTF EHT long training field
  • the following specifically provides the positions of pilot subcarriers in some discrete resource units, and the distribution mode of subcarriers in discrete RUs when the pilot subcarriers are the same as pilot subcarriers in continuous resource units.
  • a discrete RU includes multiple sub-RUs, and each sub-RU includes multiple sub-carrier groups.
  • One subcarrier group includes 1 subcarrier.
  • the interval between adjacent sub-carriers of a sub-RU is the same.
  • a discrete RU includes at least one pilot subcarrier.
  • the pilot subcarrier positions for discrete RUs are the same as for pilot subcarriers in contiguous RUs.
  • a discrete RU includes 2 sub-RUs. Among the two sub-RUs, the index of the sub-carrier of one of the sub-RUs is odd, and the index of the sub-carrier of the other sub-RU is even. The frequency of any sub-carrier of one of the two sub-RUs is higher than the frequency of any sub-carrier of the other sub-RU.
  • a discrete RU includes at least one pilot subcarrier. The pilot subcarrier positions of discrete RUs are the same in the bandwidth as pilot subcarriers in contiguous RUs.
  • each discrete RU has pilot subcarriers, which can make the EHT-STF/EHT-LTF in the PPDU.
  • the sequence remains unchanged, realizing the mixed transmission of discrete RU and continuous RU, and can also enable the station to perform better phase correction.
  • the bandwidth is 20MHz.
  • 20MHz includes discrete 26-tone RU, discrete 52-tone RU, discrete 106-tone RU, discrete 242-tone RU, or a combination of one or more.
  • the 20MHz includes 256 subcarriers, and the index values are -128, . . . , 0, .
  • [a:m:b]&[c:m:d] represents a discrete sequence of ⁇ a,a+m,...,bm,b ⁇ , plus ⁇ c,c+m,... ,dm,d ⁇ discrete sequence.
  • the discrete sequence of ⁇ a,a+m,...,bm,b ⁇ includes subcarrier a, subcarrier a+m,..., subcarrier bm, subcarrier b; ⁇ c,c+m,...,dm,d ⁇
  • the discrete sequence of includes subcarrier c, subcarrier c+m,..., subcarrier dm, subcarrier d.
  • Each discrete RU in Table 3 includes 2 sub-RUs. Among the two sub-RUs, the index of the sub-carrier of one RU is odd, and the index of the other sub-carrier is even. The frequency of any sub-carrier of one of the sub-RUs is higher than the frequency of any sub-carrier of the other sub-RU.
  • Each discrete RU includes one pilot subcarrier, and the positions of the pilot subcarriers in Table 3 and the continuous RU scenario (eg, the pilot subcarriers of the continuous RUs in Table 1) are the same.
  • the discrete 26-tone RU includes 2 sub-RUs.
  • the multiple subcarriers of a sub-RU two adjacent subcarriers are separated by one subcarrier, or in other words, the difference between the subcarrier indices of two adjacent subcarriers is 2.
  • a discrete 26-tone RU allocated to a site may be one of DRU1-DRU4 and DRU6-DRU9 in the row where the 26-tone RU is located in Table 3 above.
  • DRU5 includes two contiguous sets of subcarriers (subcarrier-16 to subcarrier-4, and subcarrier 4 to subcarrier 16), so DRU5 is actually a contiguous RU.
  • the discrete 26-tone RUs corresponding to DRU1 in the row where the 26-tone RUs are located in Table 3 above include: subcarrier-121, subcarrier-119, subcarrier-117, ..., subcarrier-99, subcarrier Carrier-97, Sub-Carrier-95, Sub-Carrier-94, Sub-Carrier-92, Sub-Carrier-90, ..., Sub-Carrier-74, Sub-Carrier-72 and Sub-Carrier-70.
  • a sub-RU of the discrete 26-tone RU includes sub-carrier-121, sub-carrier-119, sub-carrier-117, ..., sub-carrier-99, sub-carrier-97, sub-carrier-95;
  • the discrete 26 -Another sub-RU of a tone RU includes Sub-Carrier-94, Sub-Carrier-92, Sub-Carrier-90, ..., Sub-Carrier-74, Sub-Carrier-72, Sub-Carrier- 70.
  • subcarrier-90 and subcarrier-76 are pilot subcarriers.
  • the discrete 26-tone RUs corresponding to DRU 2 in the row where the 26-tone RUs are located in Table 3 above include: subcarrier-120, subcarrier-118, subcarrier-116, ..., subcarrier-98, subcarrier- 96, Sub-Carrier-95, Sub-Carrier-93, Sub-Carrier-91, ..., Sub-Carrier-75, Sub-Carrier-73 and Sub-Carrier-71.
  • one sub-RU of the discrete 26-tone RU includes sub-carrier-120, sub-carrier-118, sub-carrier-116, ..., sub-carrier-98 and sub-carrier-96; the other of the discrete 26-tone RU Sub-RUs include Sub-Carrier-95, Sub-Carrier-93, Sub-Carrier-91, ..., Sub-Carrier-75, Sub-Carrier-73, and Sub-Carrier-71.
  • subcarrier-116 and subcarrier-102 are pilot subcarriers.
  • DRU1 and DRU2 can be understood as a discrete RU group.
  • subcarriers spaced between multiple subcarriers of one discrete RU may also be used as subcarriers of another one or more discrete RUs.
  • Discrete RUs may appear in the form of discrete RU groups in the bandwidth, so that frequency domain resources can be fully utilized, and subcarriers spaced between subcarriers of a discrete RU can be fully utilized.
  • a discrete RU group includes multiple discrete RUs. The spaced subcarriers between the multiple subcarriers of any one discrete RU in the discrete RU group are subcarriers of another at least one discrete RU in the discrete RU group.
  • DRU3 and DRU4 are a discrete RU group
  • DRU6 and DRU7 are a discrete RU group
  • DRU8 and DRU9 are a discrete RU group.
  • the station may unify the pilot subcarriers of all discrete RUs to perform phase correction jointly.
  • the discrete 52-tone RU allocated to a site may be one of DRU1-DRU4 in the row where the 52-tone RU is located in Table 3 above.
  • the discrete 52-tone RUs corresponding to DRU1 in the row where the 52-tone RUs are located in Table 3 above include: subcarrier-121, subcarrier-119, subcarrier-117, ..., subcarrier-67, subcarrier Carrier-69, Sub-Carrier-71, Sub-Carrier-68, Sub-Carrier-70, Sub-Carrier-72, ..., Sub-Carrier-20, Sub-Carrier-18 and Sub-Carrier-16.
  • a sub-RU of the discrete 52-tone RU includes sub-carrier-121, sub-carrier-119, sub-carrier-117, ..., sub-carrier-67, sub-carrier-69 and sub-carrier-71; the discrete 52-tone Another sub-RU of tone RU includes sub-carrier-68, sub-carrier-70, sub-carrier-72, ..., sub-carrier-20, sub-carrier-18 and sub-carrier-16.
  • subcarrier-62, subcarrier-48, subcarrier-32 and subcarrier-22 are pilot subcarriers.
  • the discrete 52-tone RUs corresponding to DRU2 in the row where the 52-tone RUs are located in Table 3 above include: subcarrier-120, subcarrier-118, subcarrier-116, ..., subcarrier-74, subcarrier-72 , Sub-Carrier-70, Sub-Carrier-69, Sub-Carrier-67, Sub-Carrier-65, ..., Sub-Carrier-21, Sub-Carrier-19 and Sub-Carrier-17.
  • a sub-RU of the discrete 52-tone RU includes sub-carrier-120, sub-carrier-118, sub-carrier-116, ..., sub-carrier-74, sub-carrier-72 and sub-carrier-70;
  • the discrete 52-tone Another sub-RU of tone RU includes sub-carrier-69, sub-carrier-67, sub-carrier-65, ..., sub-carrier-21, sub-carrier-19 and sub-carrier-17.
  • subcarrier-116, subcarrier-102, subcarrier-90 and subcarrier-76 are pilot subcarriers.
  • the subcarriers spaced between the subcarriers of DRU1 in the row where the 52-tone RU is located are the subcarriers of DRU2, and the DRU1 and the DRU2 can be understood as a discrete RU group.
  • DRU3 and DRU4 can be understood as a discrete RU group.
  • the discrete 106-tone RU allocated to a site can be DRU1 or DRU2 in the row where the 106-tone RU is located in Table 3 above.
  • DRU1 and DRU2 can be understood as a discrete RU group.
  • the discrete 106-tone RUs corresponding to DRU1 in the row where the 106-tone RUs are located in Table 3 above include: subcarrier-122, subcarrier-120, subcarrier-118, ..., subcarrier-22, subcarrier-20 , subcarrier-18, subcarrier 17, subcarrier 19, subcarrier 21, ..., subcarrier 117, subcarrier 119 and subcarrier 121.
  • a sub-RU of the discrete 106-tone RU includes sub-carrier-122, sub-carrier-120, sub-carrier-118, ..., sub-carrier-22, sub-carrier-20 and sub-carrier-18;
  • the discrete 106- Another sub-RU of tone RU includes sub-carrier 17, sub-carrier 19, sub-carrier 21, ..., sub-carrier 117, sub-carrier 119 and sub-carrier 121.
  • its subcarrier-116, subcarrier-90, subcarrier-48 and subcarrier-22 are pilot subcarriers.
  • the scattered 106-tone RUs corresponding to DRU1 in the row where the 106-tone RUs are located in Table 3 above include: subcarrier-121, subcarrier-119, subcarrier-117, ..., subcarrier-21, subcarrier-19 , subcarrier-17, subcarrier 18, subcarrier 20, subcarrier 22, ..., subcarrier 118, subcarrier 120, subcarrier 122.
  • a sub-RU of the discrete 106-tone RU includes sub-carrier-121, sub-carrier-119, sub-carrier-117, ..., sub-carrier-21, sub-carrier-19, sub-carrier-17;
  • the discrete 106 - Another sub-RU of the tone RU includes sub-carrier 18, sub-carrier 20, sub-carrier 22, ..., sub-carrier 118, sub-carrier 120, sub-carrier 122.
  • subcarrier-22, subcarrier-48, subcarrier-90 and subcarrier-116 are pilot subcarriers.
  • the sub-carrier range of each DRU in Table 3 of the present application is only used for illustration, and the present application does not limit the sub-carrier range of each DRU.
  • the above-mentioned discrete RU group is related to the sub-carrier range of each DRU. When the sub-carrier range of one DRU changes, the DRU that is a discrete RU group will also change.
  • the present application is also not limited to the discrete RU grouping in the bandwidth as the above-mentioned example grouping.
  • the sub-carrier range of DRU1 in the row where the 26-tone RU is located may also be the odd-numbered sub-carriers from sub-carrier-121 to sub-carrier-93 and the even-numbered sub-carriers from sub-carrier 18 to sub-carrier 42
  • the subcarrier range of the DRU6 in the row where the 26-tone RU is located may be the odd subcarriers between subcarriers 17 and 41 and the even subcarriers between subcarriers -120 and -96. In this way, the DRU1 and the DRU6 are a discrete RU group.
  • odd-numbered subcarriers refer to subcarriers with odd indices
  • even-numbered subcarriers refer to subcarriers with even indices.
  • the odd-numbered sub-carriers between sub-carriers A and B include odd-numbered sub-carriers with indices greater than or equal to A and less than or equal to B.
  • the even-numbered sub-carriers between sub-carriers X and Y include even-numbered sub-carriers with indices greater than or equal to X and less than or equal to Y.
  • the subcarriers of DRU1 in the row where the 242-tone RU is located in Table 3 above include subcarrier-122, subcarrier-121, subcarrier-120, ..., subcarrier-4, subcarrier-3, subcarrier-2, Sub-Carrier 2, Sub-Carrier 3, Sub-Carrier 4..., Sub-Carrier 120, Sub-Carrier 121 and Sub-Carrier 122.
  • a sub-RU of a discrete 242-tone RU includes sub-carrier-122, sub-carrier-121, sub-carrier-120, ..., sub-carrier-4, sub-carrier-3, sub-carrier-2; discrete 242-tone RU
  • the other sub-RU includes sub-carrier 2, sub-carrier 3, sub-carrier 4..., sub-carrier 120, sub-carrier 121 and sub-carrier 122.
  • subcarrier-116, subcarrier-90, subcarrier-48, subcarrier-22, subcarrier 22, subcarrier 48, subcarrier 90 and subcarrier 116 are pilot subcarriers.
  • the DRU1 includes 2 subcarrier groups, and each subcarrier group includes 121 consecutive subcarriers. DRU1 in the row where this 242-tone RU is located is a special continuous RU, not a discrete RU.
  • the bandwidth is greater than or equal to 40 MHz
  • the discrete RUs are distributed over a frequency range greater than or equal to 40 MHz
  • each sub-RU of the discrete RU may be located on a different 20 MHz.
  • a discrete 26-tone RU in bandwidth may include 2 sub-RUs, each sub-RU including 13 sub-carriers. Each sub-RU is on a different 20MHz. The number of sub-carriers spaced between adjacent sub-carriers in each sub-RU is 1 sub-carrier, 2 sub-carriers, 3 sub-carriers, and so on.
  • the bandwidth is 80MHz
  • the 2 sub-RUs of the discrete 26-tone RU 26 sub-RU1 and 26 sub-RU2 in Figure 6A
  • the number of subcarriers spaced between adjacent subcarriers in each subRU is 1 subcarrier.
  • the resource unit allocation schematic diagram As shown in Fig. 6B, the resource unit allocation schematic diagram, the bandwidth is 80MHz, and the 4 sub-RUs of the discrete 26-tone RU (26 sub-RU1, 26 sub-RU2, 26 sub-RU3 and 26 sub-RU4 in Fig. 6B) are located in the first The first 20 MHz, the second 20 MHz, the third 20 MHz, and the fourth 20 MHz, the number of sub-carriers spaced between adjacent sub-carriers in each sub-RU of the discrete RU is 3 sub-carriers.
  • the bandwidth is greater than or equal to 80MHz.
  • one 80MHz of bandwidth includes four 20MHz.
  • the discrete 52-tone RU within 80MHz includes 4 sub-RUs, and each sub-RU includes 13 sub-carriers.
  • Each sub-RU is on a different 20MHz. That is, the 4 sub-RUs of the discrete 52-tone RU are distributed on 4 20MHz.
  • the number of sub-carriers spaced between adjacent sub-carriers in each sub-RU is 1 sub-carrier, 2 sub-carriers, 3 sub-carriers, and so on.
  • the bandwidth is 80MHz
  • 4 sub-RUs of discrete 52-tone RUs 52 sub-RU1, 52 sub-RU2, 52 sub-RU3 and 52 sub-RU4 shown in Figure 6C
  • the number of sub-carriers spaced between adjacent sub-carriers in each sub-RU of the discrete 52-tone RU is 3 sub-carriers.
  • the bandwidth is greater than or equal to 80MHz.
  • one 80MHz of bandwidth includes four 20MHz.
  • the discrete 106-tone RU within 80MHz includes 4 sub-RUs, wherein each of the 2 sub-RUs includes 27 sub-carriers, and each of the other 2 sub-RUs includes 26 sub-carriers.
  • Each sub-RU is on a different 20MHz. That is, the 4 sub-RUs of the discrete 56-tone RU are distributed on 4 20MHz.
  • the number of sub-carriers spaced between adjacent sub-carriers in each sub-RU is 1 sub-carrier, 2 sub-carriers, 3 sub-carriers, and so on.
  • the bandwidth is 80MHz
  • the 4 sub-RUs of the discrete 106-tone RU (106 sub-RU1, 106 sub-RU2, 106 sub-RU3 and 106 sub-RU4 in Fig. 6D) are respectively located in
  • the number of subcarriers spaced between adjacent subcarriers in each sub-RU of the discrete 106-toneRU is 3 subcarriers.
  • the bandwidth is greater than or equal to 80MHz.
  • one 80MHz of bandwidth includes at least four 20MHz.
  • the discrete 242-tone RU within 80MHz includes 4 sub-RUs, wherein each of the 2 sub-RUs includes 61 sub-carriers, and each of the other 2 sub-RUs includes 60 sub-carriers.
  • Each sub-RU is on a different 20MHz. That is, the 4 sub-RUs of the discrete 56-tone RU are distributed on 4 20MHz.
  • the number of sub-carriers spaced between adjacent sub-carriers in each sub-RU is 1 sub-carrier, 2 sub-carriers, 3 sub-carriers, and so on.
  • the bandwidth is 80MHz
  • 4 sub-RUs of discrete 242-tone RUs (242 sub-RU1, 242 sub-RU2, 242 sub-RU3 and 242 sub-RU 4 in Figure 6E) are respectively In the first 20MHz, the second 20MHz, the third 20MHz and the fourth 20MHz, the number of sub-carriers spaced between adjacent sub-carriers in each sub-RU of the discrete 242-tone RU is 3 sub-carriers carrier.
  • each RU in the multiple sub-RUs is distributed in a different 20MHz, and the sub-carriers in each sub-RU are discrete or discontinuous.
  • the examples of this application are not listed one by one.
  • the number of sub-RUs included in each discrete RU is not limited to the number exemplified above.
  • a discrete RU includes multiple sub-RUs, each sub-RU includes 2 sub-carrier subgroups, and each sub-carrier subgroup includes multiple sub-carriers.
  • the index of the subcarrier in one subcarrier subgroup is odd, and the index of the subcarrier in the other subcarrier subgroup is even. It can be understood that, among multiple subcarriers in a subcarrier subgroup, two adjacent subcarriers are separated by one subcarrier.
  • Each sub-RU of the plurality of sub-RUs includes at least one pilot sub-carrier. In this way, the pilot subcarriers are evenly distributed, which helps to improve the accuracy of phase correction.
  • the resource unit allocation information indicates the number of subcarriers of the discrete RU and the position of the subcarriers in the bandwidth according to Table 4.
  • the 26-tone RU allocated to a site can be one of DRU1-DRU4 and DRU6-DRU9 in the row where the 26-tone RU in Table 4 is located.
  • the discrete 26-tone RU corresponding to DRU1 in the row where the 26-tone RU in Table 4 is located includes 2 sub-RUs.
  • One of the sub-RUs includes odd-numbered sub-carriers between sub-carriers-121 to -109, and even-numbered sub-carriers between sub-carriers-106 to sub-carriers-96; wherein, the pilot sub-carriers of sub-carrier-102.
  • Another sub-RU includes even-numbered sub-carriers from sub-carrier-95 to sub-carrier-83, and odd-numbered sub-carriers from sub-carrier-80 to sub-carrier-70; wherein sub-carrier-76 is a pilot sub-carrier.
  • each sub-RU of the discrete 26-tone RU includes at least one pilot sub-carrier.
  • the sub-carrier range of the discrete 26-tone RUs corresponding to DRU2-DRU4 and DRU6-DRU9 in the row of the 26-tone RU in Table 4 and the position of the pilot sub-carrier refer to Table 4, here I will not explain them one by one.
  • the 52-tone RU allocated to a site may be one or more of DRU1-DRU4 in the row where the 52-tone RU in Table 4 is located.
  • the discrete 52-tone RU corresponding to DRU1 in the row where the 52-tone RU in Table 4 is located includes 2 sub-RUs.
  • One of the sub-RUs includes odd-numbered sub-carriers from sub-carrier-121 to sub-carrier-95, and even-numbered sub-carriers from sub-carrier-92 to sub-carrier 70; where sub-carrier-90 and sub-carrier-76 are pilot sub-carriers carrier.
  • Another sub-RU includes odd-numbered sub-carriers between sub-carrier-67 and sub-carrier-41, and even-numbered sub-carriers between sub-carrier-40 and sub-carrier-18; wherein, sub-carrier-36 and sub-carrier-22 are the leading frequency subcarriers.
  • each sub-RU of the discrete 52-tone RU includes at least one pilot sub-carrier.
  • the sub-carrier range of the discrete 52-tone RUs corresponding to DRU2-DRU4 in the row where the 52-tone RU is located in Table 4 and the position of the pilot sub-carrier refer to Table 4 for details. A description.
  • the 106-tone RU allocated to a site can be RU1 or RU2 in the row where the 106-tone RU is located in Table 4.
  • the RU1 includes 2 sub-RUs, one of the 2 sub-RUs includes 2 sub-carrier sub-groups, one of the sub-carrier sub-groups includes even-numbered sub-carriers between sub-carrier-122 and sub-carrier-68; the other sub-carrier The sub-group includes odd-numbered sub-carriers between sub-carrier-67 to sub-carrier-17.
  • Subcarrier-116 and subcarrier-90 in the one sub-RU are pilot subcarriers.
  • Another sub-RU of the RU1 includes 2 sub-carrier sub-groups, wherein one sub-carrier sub-group includes odd-numbered sub-carriers between sub-carrier 17 and sub-carrier 69; the other sub-carrier sub-group includes between sub-carrier 72 and sub-carrier 122 of even-numbered subcarriers.
  • the sub-carriers 90 and 116 in the other sub-RU are pilot sub-carriers. In this way, each sub-RU of the discrete 106-tone RU includes at least one pilot sub-carrier.
  • RU2 in the row where the 106-tone RU is located in Table 4 includes 2 sub-RUs, where one sub-RU includes 2 sub-carrier sub-groups, and each sub-RU includes 2 sub-carrier sub-groups.
  • the index of the subcarrier in one subcarrier subgroup is odd, and the index of the subcarrier in the other subcarrier subgroup is even.
  • Each sub-RU includes at least 1 pilot sub-carrier.
  • 242-tone RU within 20MHz is continuous RU. That is, the DRU1-bit consecutive RUs in the row where the 242-tone RUs in Table 4 are located.
  • a discrete RU includes multiple sub-RUs, each sub-RU includes 2 sub-carrier subgroups, and each sub-carrier subgroup includes multiple sub-carriers.
  • the index of the subcarrier in one subcarrier subgroup is odd, and the index of the subcarrier in the other subcarrier subgroup is even.
  • the bandwidth is greater than or equal to 40MHz, and each of the multiple sub-RUs is located in a different 20MHz.
  • the discrete RUs may be distributed within 40 MHz.
  • the 40MHz includes 512 subcarriers.
  • the index ranges of the 512 subcarriers are -256, -255, -254, ..., 0, ..., 253, 254, 255.
  • the first 20MHz in 40MHz includes subcarrier-256, subcarrier-255, subcarrier-254,..., subcarrier-3, subcarrier-2 and subcarrier-1; subcarrier 0, the first in 40MHz 2 20MHz includes sub-carrier 1, sub-carrier 2, . . . , sub-carrier 253, sub-carrier 254 and sub-carrier 255.
  • Table 5 shows the RU indices of the discrete RUs that may be distributed, the subcarrier ranges of the discrete RUs, and the positions of pilot subcarriers when the bandwidth is 40 MHz.
  • the resource unit allocation information may indicate the number of subcarriers of each discrete RU and the position of the subcarriers in the bandwidth according to Table 5.
  • the discrete 26-tone RU allocated to a site may be one of DRU1-DRU18 in the row where the 26-tone RU in Table 5 is located.
  • the DRU1 in the row where the 26-tone RU is located in Table 5 includes 2 sub-RUs, and one sub-RU of the DRU1 includes odd-numbered sub-carriers between sub-carrier-243 and sub-carrier-231, and sub-carrier-228 Even subcarriers between subcarriers - 218.
  • the subcarrier-224 in the DRU1 is a pilot subcarrier. It can be seen that a sub-RU of the DRU1 is located in the first 20MHz of the 40MHz.
  • the other sub-RU of the DRU1 includes even-numbered sub-carriers from sub-carrier 4 to sub-carrier 16 , and odd-numbered sub-carriers from sub-carrier 19 to sub-carrier 29 .
  • the sub-carriers 10 in the other sub-RU are pilot sub-carriers. It can be seen that another sub-RU of the DRU1 is located in the second 20MHz of the 40MHz.
  • the DRU2 in the row where the 26-tone RU in Table 5 is located includes 2 sub-RUs, and one sub-RU of the DRU2 includes the odd-numbered sub-carriers between sub-carrier-217 and sub-carrier-205 and sub-carrier-174 sub-carriers-164. Even-numbered subcarriers between.
  • Subcarrier-170 in the DRU is a pilot subcarrier.
  • a sub-RU of the DRU2 is located in the first 20MHz of the 40MHz.
  • the other sub-RU of the DRU2 includes even sub-carriers between sub-carriers 30 and 42, and odd-numbered sub-carriers between sub-carriers 45 and 55.
  • the sub-carrier of another sub-RU of the DRU2 is a 36-bit pilot sub-carrier.
  • Another sub-RU of the DRU2 is located in the second 20MHz of the 40MHz.
  • each discrete 26-tone RU in the other discrete 26-tone RUs in Table 5 includes 2 sub-RUs, one of which is located at the 40MHz One 20MHz, and the other sub-RU is located in the second 20MHz of the 40MHz.
  • Each sub-RU includes 2 sub-carrier sub-groups, wherein the index of the sub-carriers in one sub-carrier sub-group is an odd number, and the index of the sub-carriers in the other sub-carrier sub-group is an even number.
  • Each of the 2 sub-RUs includes at least one pilot sub-carrier.
  • the discrete 52-tone RU allocated to a site may be one of DRU1-DRU8 in the row where the 52-tone RU in Table 5 is located.
  • DRU1 in the row where the 52-tone RU in Table 5 is located includes 2 sub-RUs.
  • One sub-RU of the DRU1 includes odd-numbered sub-carriers from sub-carrier-243 to sub-carrier- 217 , and even-numbered sub-carriers from sub-carrier- 214 to sub-carrier- 192 .
  • Subcarrier-212 and subcarrier-198 of one sub-RU of DRU1 are pilot subcarriers.
  • a sub-RU of the DRU1 is located in the first 20MHz of the 40MHz.
  • Another sub-RU of the DRU1 includes even sub-carriers between sub-carriers -4 and 30, and odd-numbered sub-carriers between sub-carriers 33 and 55.
  • the sub-carrier 20 and sub-carrier 24 of the other sub-RU of the DRU1 are pilot sub-carriers.
  • Another sub-RU of the DRU1 is located in the second 20MHz of the 40MHz.
  • each discrete 52-tone RU in the other discrete 52-tone RUs in Table 5 includes 2 sub-RUs, one of which is located at the 40MHz One 20MHz, and the other sub-RU is located in the second 20MHz of the 40MHz.
  • Each sub-RU includes 2 sub-carrier sub-groups, wherein the index of the sub-carriers in one sub-carrier sub-group is an odd number, and the index of the sub-carriers in the other sub-carrier sub-group is an even number.
  • Each of the 2 sub-RUs includes at least one pilot sub-carrier.
  • the discrete 106-tone RU allocated to a site may be one of DRU1-DRU4 in the row where the 106-tone RU in Table 5 is located.
  • RU1 in the row where the 106-tone RU in Table 5 is located includes 2 sub-RUs.
  • One sub-RU of the RU1 includes odd-numbered sub-carriers from sub-carrier-243 to sub-carrier-191, and even-numbered sub-carriers from sub-carrier-188 to sub-carrier-138.
  • Subcarrier-170 and subcarrier-144 of one sub-RU of the RU1 are pilot subcarriers.
  • a sub-RU of the RU1 is located in the first 20MHz of the 40MHz.
  • the other sub-RU of RU1 includes even-numbered sub-carriers between sub-carriers 4 to 56 , and odd-numbered sub-carriers between sub-carrier 59 and sub-carrier 109 .
  • Sub-carrier 1- and sub-carrier 36 of the other sub-RU of this RU1 are pilot sub-carriers.
  • Another sub-RU of the RU1 is located in the second 20MHz of the 40MHz.
  • each discrete 106-tone RU in the other discrete 106-tone RUs in Table 5 includes 2 sub-RUs, one of which is located in the 40MHz One 20MHz, and the other sub-RU is located in the second 20MHz of the 40MHz.
  • Each sub-RU includes 2 sub-carrier sub-groups, wherein the index of the sub-carriers in one sub-carrier sub-group is an odd number, and the index of the sub-carriers in the other sub-carrier sub-group is an even number.
  • Each of the 2 sub-RUs includes at least one pilot sub-carrier.
  • the discrete 242-tone RU allocated to a site can be DRU1 or DRU2 in the row where the 242-tone RU in Table 5 is located.
  • DRU1 in the row where the 242-tone RU is located includes 2 sub-RUs.
  • One sub-RU of the DRU1 includes even-numbered sub-carriers from sub-carrier-244 to sub-carrier-124, and odd-numbered sub-carriers from sub-carrier-121 to sub-carrier-3.
  • Subcarrier-238, subcarrier-212, subcarrier-170 and subcarrier-144 in one sub-RU of the DRU1 are pilot subcarriers.
  • a sub-RU of the DRU1 is located in the first 20MHz of the 40MHz.
  • Another sub-RU of the DRU1 includes odd-numbered sub-carriers from sub-carrier 3 to sub-carrier 123 , and even-numbered sub-carriers from sub-carrier 126 to sub-carrier 244 .
  • the sub-carrier 144, sub-carrier 170, sub-carrier 212 and sub-carrier 238 of another sub-RU of the DRU1 are pilot sub-carriers.
  • Another sub-RU of the DRU1 is located in the second 20MHz of the 40MHz.
  • DRU2 in the row where the 242-tone RU is located in Table 5 also includes 2 sub-RUs, one of which is located in the first 20MHz of the 40MHz, and the other sub-RU is located in the second 20MHz of the 40MHz.
  • Each sub-RU includes 2 sub-carrier sub-groups, wherein the index of the sub-carriers in one sub-carrier sub-group is an odd number, and the index of the sub-carriers in the other sub-carrier sub-group is an even number.
  • Each of the 2 sub-RUs includes at least one pilot sub-carrier.
  • a discrete RU allocated to a site may include 4 sub-RUs.
  • the four sub-RUs are respectively located at four 20MHz of 80MHz.
  • Each sub-RU includes 2 sub-carrier sub-groups, wherein the index of the sub-carriers in one sub-carrier sub-group is odd, and the index of the sub-carriers in the other sub-carrier sub-group is even.
  • Each of the 4 sub-RUs includes at least one pilot sub-carrier.
  • a discrete RU allocated to a site may include 8 sub-RUs.
  • the 8 sub-RUs are respectively located at 8 20MHz of 160MHz.
  • Each sub-RU includes 2 sub-carrier sub-groups, wherein the index of the sub-carrier in one sub-carrier sub-group is odd, and the index of the sub-carrier in the other sub-carrier sub-group is even.
  • Each of the 8 sub-RUs includes at least one pilot sub-carrier.
  • a discrete RU allocated to a site may include 16 sub-RUs.
  • the 16 sub-RUs are respectively located at 16 20MHz of 320MHz.
  • Each sub-RU includes 2 sub-carrier sub-groups, wherein the index of the sub-carrier in one sub-carrier sub-group is odd, and the index of the sub-carrier in the other sub-carrier sub-group is even.
  • Each of the 16 sub-RUs includes at least one pilot sub-carrier.
  • the bandwidth is greater than or equal to 40 MHz
  • the discrete RU includes multiple subcarrier groups.
  • One subcarrier group includes a plurality of consecutive subcarriers. The number of consecutive subcarriers in any one of the multiple subcarrier groups is less than 13.
  • the multiple subcarrier groups are located at different 20MHz respectively.
  • a discrete RU is a discrete 26-tone RU.
  • the discrete 26-tone RU is divided into 4 sub-carrier groups, of which the 1-7 sub-carriers are a sub-carrier group, the 8-14 sub-carriers are a sub-carrier group, the 15-20 sub-carriers are a sub-carrier group, and the 15-20 sub-carriers are a sub-carrier group.
  • 21-26 subcarriers are a subcarrier group.
  • the 4 subcarrier groups are located at different 20MHz respectively.
  • the 1st to 7th subcarriers of discrete 26-tone RU are located in the first 20MHz of 80MHz, the 8th to 14th subcarriers are located in the second 20MHz of 80MHz, and the 15th to 20th subcarriers are located in the third 80MHz. 20MHz, the 21st-26th sub-carriers are located in the 4th 20MHz of the 80MHz.
  • the discrete RU is 52-tone RU.
  • a 52-tone RU can include 8 subcarrier groups, each located at different 20MHz.
  • multiple subcarrier groups may also be included, and each subcarrier group in the multiple subcarrier groups is located at a different 20 MHz respectively.
  • the present application does not limit the number of subcarrier groups included in a discrete RU to the number in the above example.
  • the bandwidth is greater than or equal to 40 MHz
  • the discrete RU includes multiple sub-RUs
  • each sub-RU includes multiple sub-carrier groups
  • each sub-carrier group includes multiple consecutive sub-carriers.
  • the number of consecutive subcarriers in any one subcarrier group is less than 13.
  • Multiple sub-RUs are located at different 20MHz respectively.
  • the bandwidth is greater than or equal to 80MHz.
  • Discrete RU is 52-tone RU.
  • the 52-tone RU includes 4 sub-RUs, each sub-RU includes 2 sub-carrier groups, and the 4 sub-RUs are located at different 20MHz.
  • one 20MHz in the bandwidth includes one sub-RU, and the sub-RU includes 2 sub-carrier groups, wherein one sub-carrier group includes the 1st to 7th sub-carriers of the 52-tone RU, and the other sub-carrier group includes 52-tone RU.
  • the 7th subcarrier and the 8th subcarrier are discontinuous.
  • the other 20MHz in the bandwidth includes another sub-RU that includes 2 sub-carrier groups, one of which includes the 15-21st sub-carriers of the 52-tone RU, and the other sub-carrier group includes the 52-tone RU's
  • the 21st subcarrier and the 22nd subcarrier are discontinuous.
  • Another 20MHz in the bandwidth includes yet another sub-RU, which includes 2 sub-carrier groups, one of which includes the 29th-34th sub-carriers of the 52-tone RU, and the other sub-carrier group includes the 52-tone RU's
  • the 34th subcarrier and the 35th subcarrier are discontinuous.
  • Another 20MHz in the bandwidth includes one more sub-RU, and the sub-RU includes 2 sub-carrier groups, one of which includes the 1-7 sub-carriers of the 52-tone RU, and the other sub-carrier group includes the 52-tone RU.
  • the 7th subcarrier and the 8th subcarrier are discontinuous.
  • the discrete RU is a 106-tone RU
  • the discrete 106-tone RU can also include 4 sub-RUs, which are located at different 20MHz respectively.
  • Each of the 4 sub-RUs may include 4 sub-carrier groups, and each sub-carrier group includes a plurality of consecutive sub-carriers. In the four subcarrier groups of each sub-RU, any two subcarriers belonging to different subcarrier groups are discontinuous.
  • the discrete RU is a 242-tone RU, and the 242-tone RU can also include 4 sub-RUs, which are located at different 20MHz.
  • Each of the 4 sub-RUs may include 8 sub-carrier groups, and each sub-carrier group includes a plurality of consecutive sub-carriers. In the 8 subcarrier groups of each sub-RU, any two subcarriers belonging to different subcarrier groups are discontinuous.
  • each subcarrier group in the multiple subcarrier groups is located at a different 20 MHz respectively.
  • the number of consecutive subcarriers included in each subcarrier group is less than 13.
  • This application does not limit the number of sub-RUs included in a discrete RU and the number of sub-carrier groups included in a sub-RU to be the numbers in the above examples.
  • a discrete RU may form a discrete multi-RU (multi-RU, MRU) with another discrete RU, and a discrete RU may also form a discrete MRU with a continuous RU.
  • the discrete MRU can be assigned to one or more sites. That is to say, one or more RUs allocated to a site may include discrete multi-RUs.
  • the discrete RU in the discrete multi-RU may be the discrete RU involved in any of the foregoing embodiments.
  • the bandwidth when the bandwidth is greater than or equal to 80MHz, the bandwidth includes discrete 484+242-tone RUs.
  • the discrete 484+242-tone RU includes discrete 242-tone RU and discrete 484-tone RU.
  • the 484 may include 2 sub-RUs (such as 484 sub-RU1 and 484 sub-RU2 in FIG. 7 ), and each sub-RU is located at one 40MHz of the 80MHz, respectively.
  • the 242-tone RU may also include 4 sub-RUs (such as 242 sub-RU1, 242 sub-RU2, 242 sub-RU3 and 242 sub-RU4 in FIG. 7), which are respectively located at a 20MHz of the 80MHz.
  • the bandwidth may include discrete 52+26-tone RUs including discrete 52-tone RUs and discrete 26-tone RUs, discrete 52-tone RUs and discrete 26-tone RUs of subcarriers
  • the distribution manner may be one of the distribution manners of the subcarriers of the discrete RUs provided in the foregoing embodiments.
  • the discrete 106+52-tone RUs in the bandwidth include discrete 106-tone RUs and discrete 52-tone RUs, and the distribution of the subcarriers of the discrete 106-tone RUs and discrete 52-tone RUs can be the discrete RUs provided in the foregoing embodiments.
  • One of the distribution methods of the sub-carriers One of the distribution methods of the sub-carriers.
  • the distribution manner of the subcarriers of the discrete RUs in the discrete multi-RU may also be one of the distribution manners of the subcarriers of the discrete RUs provided in the foregoing embodiments.
  • discrete RUs with a number of subcarriers greater than or equal to 242 may be allocated to multiple users to support multiple users to perform multi-user multiple input multiple output (MU-MIMO) transmission.
  • MU-MIMO multi-user multiple input multiple output
  • an indication mode of resource unit allocation information is introduced.
  • the resource unit allocation information indicates the size of the discrete RU and the index of the discrete RU.
  • the index (DRU X) of each discrete RU of the same size corresponds to the subcarrier range of one discrete RU and the pilot subcarriers of the discrete RU.
  • the resource unit allocation information can indirectly indicate the subcarrier range of the discrete RU and the pilot subcarriers of the discrete RU by indicating the index of the discrete resource unit.
  • step 501 may be implemented by the access point sending a PPDU to the station.
  • the resource unit allocation subfield of the PPDU includes a common field and a user-specific field including the resource unit allocation indication information, and the user field of the user-specific field of the PPDU includes site information.
  • the resource unit allocation subcarrier includes an index indicating the resource unit allocation, and the index indicating the resource unit allocation indicates the RU distribution in a frequency domain range of one granularity and the user field corresponding to each RU in the frequency domain range in the user-specific field. number.
  • the frequency domain range of one granularity may be, for example, but not limited to, 20 MHz.
  • the resource unit allocation subfield indicates one or more consecutive RUs distributed in sequence within 20 MHz through the index of resource unit allocation according to the corresponding relationship between the index indicating resource unit allocation and the distribution of RUs.
  • the resource unit allocation subfield may use an index in Table 6 to indicate consecutive RUs distributed within 20 MHz.
  • the correspondence between the indexes in Table 6 and the distribution of RUs is only for illustration, and the present application does not limit the resource unit allocation subfield to use the indexes in Table 6 to indicate the allocation of resource units.
  • the first column in Table 6 indicates the index of resource unit allocation.
  • the RU in the row where each index is located is the distribution of the RUs corresponding to the index.
  • the station may determine the allocation order of resource units on the bandwidth and the size (number of subcarriers) of each resource unit according to the index of the resource unit allocation subfield, and the station may determine the order of appearance of RUs for different sizes in the bandwidth. Correspondence between RUs and subcarriers. When an RU of a certain size appears in each possible order position in the bandwidth, the corresponding relationship between the RU and the subcarrier is specified by the standard.
  • Tables 1 and 2 in the above example can be used to specify the correspondence between continuous RUs and subcarriers
  • Tables 3 to 5 can be used to specify the correspondences between discrete RUs and special continuous RUs and subcarriers. It can also be said that Table 1 and Table 2 can be used to specify the subcarrier range corresponding to the continuous RU and the position of the pilot subcarrier of the RU in the bandwidth.
  • Tables 3 to 5 may be used to specify the subcarrier ranges corresponding to discrete RUs and special continuous RUs, and the positions of pilot subcarriers of the RUs in the bandwidth. It can be seen that the correspondence between discrete RUs and subcarriers is different from the correspondence between continuous RUs and subcarriers.
  • the AP may notify the RU type by sending the RU type indication information to the STA.
  • the AP may also negotiate the type of the RU with the STA before sending the resource scheduling information.
  • the station determines that the RUs on the bandwidth are all continuous RUs according to the RU type indication information sent by the access point, or before receiving the resource unit allocation subfield. , the RUs on the negotiated bandwidth between the station and the access point are all consecutive RUs. If the resource unit allocation subfield is index 00000010, the station can determine that the RUs included in the 20MHz sequentially include seven 26-tone RUs and one 52-tone RU.
  • the site can determine that the seven 26-tone RUs correspond to RU1-RU7 in the row where the 26-tone RUs are located in Table 1, and the 52-tone RUs correspond to the RUs in Table 1.
  • RU4 in the row where the 52-tone RU is located corresponds.
  • the station can determine the corresponding 26-tone RU of each of the seven 26-tone RUs according to the RU 1-RU7 in the row where the 26-tone RU is located in Table 1 for specifying the correspondence between the continuous RU and the subcarrier.
  • the sub-carrier range and the position of the pilot sub-carrier in the bandwidth, and the sub-carrier range of the 52-tone RU on the 20MHz and the pilot sub-carrier in the bandwidth are determined according to RU4 in the row where the 52-tone RU is located in Table 1. in the location.
  • each RU corresponds to a user field in a user-specific field.
  • the order in which the user fields in the user-specific fields are arranged is consistent with the order of the resource units indicated by the corresponding resource unit allocation subfield.
  • the resource unit allocation subfield is index 00000010.
  • the sites corresponding to the 1st to 7th user fields are allocated to 1 to 7 26-tone RUs; the 8th The site corresponding to the user field is assigned to a 52-tone RU.
  • an index indicating resource unit allocation indicates that the RU in the frequency domain range of a corresponding granularity is a RU with 242 subcarriers or more
  • the index indicating resource unit allocation is also used to indicate that the RU is located in the resource unit allocation subfield.
  • the number of user fields contributed in the user-specific fields in the content channel of the RU, or, in other words, is also used to indicate the number of user fields corresponding to the RU.
  • the bandwidth is 20MHz, and the 20MHz sequentially includes two discrete 52-tone RUs, one special continuous 26-tone RU, and two discrete 52-tone RUs.
  • the station determines that all RUs on the bandwidth are discrete RUs or that the bandwidth only includes discrete RUs and special continuous RUs, or before receiving the resource unit allocation subfield, the station and the access point negotiate.
  • the RUs on the bandwidth are all continuous RUs or the bandwidth only includes discrete RUs and special continuous RUs.
  • the resource unit allocation subfield corresponding to the 20MHz may be the index 00001111 in Table 6 above. According to the index 00001111, the station can determine that the 20MHz sequentially includes two discrete 52-tone RUs, one 26-tone RU, and two discrete 52-tone RUs. Discrete RUs appear in groups in terms of bandwidth.
  • the RU indicated by the index 00001111 includes only one 26-tone RU, and the station can identify that one 26-tone RU is a continuous 26-tone RU.
  • the user field corresponding to the one 26-tone RU indicates that the one 26-tone RU is a continuous 26-tone RU, and the station can also recognize that the one 26-tone RU is a continuous 26-tone RU.
  • the four discrete 52-tone RUs arranged in order can correspond to DRU1-DRU4 in the row where the 52-toneRU is located in Table 4, respectively.
  • the row where the RU is located corresponds to DRU5
  • the 26-tone RU is a special continuous 26-tone RU.
  • the station can determine the value of each discrete 52-tone RU in the four discrete 52-tone RUs according to DRU1-DRU4 in the row where the 52-toneRU is located in Table 4 for specifying the correspondence between discrete RUs and subcarriers.
  • the station can also determine the subcarrier range of the continuous 26-tone RU and the position of the pilot subcarrier of the continuous 26-tone RU in the bandwidth according to the DRU5 in the row where the 26-tone RU is located in Table 4.
  • the order in which the user fields in the user-specific fields are arranged is consistent with the order of the resource units indicated by the corresponding resource unit allocation subfield. For example, based on the above resource unit allocation subfield indicating that the corresponding 20MHz sequentially includes two discrete 52-tone RUs, one continuous 26-tone RU, and two discrete 52-tone RUs, the first discrete 52-tone RU ( The sub-carrier range corresponding to DRU1 in the row where the 52-tone RU is located) is allocated to the site corresponding to the first user field, and the second discrete 52-tone RU (the sub-carrier corresponding to DRU2 in the row where the 52-tone RU is located) is allocated to the first user field.
  • Carrier range is assigned to the site corresponding to the second user field, and consecutive 26-tone RUs (the subcarrier range corresponding to DRU5 in the row where the 26-tone RU is located) are assigned to the site corresponding to the third user field.
  • Three 52-tone RUs are allocated to the site corresponding to the fourth user field, and the fourth 52-tone RU (the row where the 52-tone RU is located) is allocated to the site corresponding to the fourth user field.
  • the range of subcarriers corresponding to DRU4 in is allocated to the station corresponding to the fifth user field.
  • step 501 may be implemented by the access point sending a trigger frame to the station.
  • the resource unit allocation subfield of the user field in the trigger frame includes the resource unit allocation indication information, and the association identification (association identification, AID) subfield of the user field includes site information.
  • the AID subfield is used to indicate the site corresponding to the user field.
  • the resource unit allocation subfield in each user field indicates the size of the RU (discrete RU or continuous RU) allocated to the station corresponding to the user field and the position in the bandwidth of the allocated RU for the station.
  • the station can determine the size of the RU to be allocated and the position of the RU in the bandwidth according to the resource unit allocation subfield in the user field, so as to determine the corresponding RU according to the position of the RU in the bandwidth and the size of the RU.
  • the subcarrier range, and the location of the pilot subcarriers for this RU in the bandwidth are examples of the pilot subcarriers for this RU in the bandwidth.
  • the indication manner of the resource unit allocation subfield indicating continuous RUs and discrete RUs is not distinguished.
  • the bandwidth includes only continuous RUs, or the bandwidth includes only distant RUs, or the bandwidth includes only discrete RUs and special RUs.
  • the indication manner of the resource unit allocation subfield is the same.
  • the resource unit allocation subfield indicates the size of the RU and the order position in which the RU appears.
  • the station can determine the range of the subcarriers of the allocated discrete RUs according to the corresponding relationship between the discrete RUs and subcarriers specified in the standard, and can also combine the continuous RUs and subcarriers specified in the standard. Correspondingly, determine the subcarrier range of the allocated consecutive RUs.
  • the resource unit allocation information is used to indicate, in the discrete resource unit, the index of the first subcarrier in the starting subcarrier group, the number of subcarriers included in the subcarrier group, the subcarrier group interval; or, the resource unit allocation information is used to indicate, in the discrete resource unit, the index of the last subcarrier in the initial subcarrier group, the number of subcarriers included in the subcarrier group, and the subcarrier group interval; or, the The resource unit allocation information is used to indicate the index of the first subcarrier in the end subcarrier group in the discrete resource unit, the number of subcarriers included in the subcarrier group, and the subcarrier group interval; or, the resource unit allocation information is used for Indicates the index of the last subcarrier in the ending subcarrier group in the discrete resource unit, the number of subcarriers included in the subcarrier group, and the subcarrier group interval.
  • the starting subcarrier group is the lowest frequency subcarrier group of the discrete unit
  • the ending subcarrier group is the highest frequency subcarrier group of the discrete unit.
  • the subcarrier group interval is used to indicate the number of subcarriers spaced between two adjacent subcarrier groups.
  • the number of subcarriers spaced between two adjacent subcarrier groups is the number of subcarriers belonging to other resource units spaced between two adjacent subcarrier groups, the number of guard subcarriers, null subcarriers and DC subcarriers Quantity is not included.
  • the subcarrier group interval may indicate the number of subcarriers spaced between the first subcarriers of the two subcarrier groups before and after, or the difference between the indices of the first subcarriers of the two subcarrier groups.
  • the subcarrier group spacing may also indicate the number of subcarriers spaced between the last subcarriers of the two subcarrier groups before and after, or the difference between the indices of the last subcarriers of the two subcarrier groups.
  • the subcarrier group spacing may also indicate the number of subcarriers spaced between subcarriers in the middle position of the two subcarrier groups before and after, or the difference between the indices of the subcarriers in the middle position of the two subcarrier groups.
  • the subcarrier group spacing can also indicate the number of subcarriers spaced between the last subcarrier of the previous subcarrier group and the first subcarrier of the next subcarrier group, or the number of subcarriers that are spaced between the last subcarrier of the previous subcarrier group. The difference between the index and the index of the first subcarrier of the next subcarrier group.
  • the station can determine the number of subcarriers of the discrete RU according to the index of the first subcarrier in the starting subcarrier group of the discrete RU indicated by the resource element allocation information, the number of subcarriers included in the subcarrier group, and the interval of the subcarrier group, and the position of each subcarrier in the bandwidth.
  • the station can determine the number of subcarriers of the discrete RU according to the index of the last subcarrier in the initial subcarrier group of the discrete RU indicated by the resource unit allocation information, the number of subcarriers included in the subcarrier group, and the subcarrier group interval , and the position of each subcarrier in the bandwidth.
  • the resource unit allocation information may indicate the subcarrier group to which a discrete RU of one site is allocated In the discrete RU, the index and subcarrier spacing of the first subcarrier in the starting subcarrier group; or the resource unit allocation information may indicate the number of subcarriers allocated to a discrete RU of a site, in the discrete RU, The index and subcarrier group spacing of the last subcarrier in the ending subcarrier group.
  • the resource element allocation information may indicate the number of subcarriers allocated to a discrete RU of one site, the index of the starting subcarrier and the subcarrier spacing in the discrete RU; or the resource element allocation information may indicate the allocation of one The number of subcarriers of the discrete RU of the site, the index of the ending subcarrier and the subcarrier interval in the discrete RU; or the resource unit allocation information is used to indicate the index of the starting subcarrier, the ending subcarrier in the discrete resource unit Carrier index and subcarrier spacing.
  • the subcarrier spacing is used to indicate the number of subcarriers belonging to other resource elements spaced between two adjacent subcarriers in the discrete resource unit, or to indicate the difference between indices of two adjacent subcarriers.
  • the bandwidth is 20MHz, including a discrete 26-tone RU.
  • the lowest frequency subcarrier of the discrete 26-tone RU is The carrier is subcarrier-121.
  • the resource unit allocation information may indicate that the number of subcarriers of the discrete RU is 26, the index of the starting subcarrier is -121, and the subcarrier spacing is 3. In this way, the device receiving the resource unit allocation information can determine, according to the resource unit allocation information, that the 20MHz includes discrete RUs and the frequency range of the discrete 26-tone RUs.
  • the resource element allocation information may also indicate only the indices of the respective subcarriers of the discrete RU, without necessarily indicating the index of the starting subcarrier, the index of the ending subcarrier, or the subcarrier spacing.
  • the resource scheduling information further includes RU type indication information.
  • the station can determine whether the RU allocated to itself is a discrete RU or a continuous RU, so as to accurately obtain the location of the subcarriers allocated to its RU.
  • the signaling field of the PPDU includes RU type indication information, and the RU type indication information may also be understood as discrete RU/continuous RU indication information.
  • the signaling field of the PPDU includes a universal-signaling field, a universal signaling field U-SIG (universal SIG, U-SIG) and an extremely high throughput signaling field (extremely high throughput, EHT-SIG).
  • EHT-SIG includes common fields and user-specific fields.
  • the U-SIG or the common field includes RU type indication information, which is used to indicate that the RUs included in the bandwidth are all discrete RUs or are all continuous RUs.
  • the RUs included in the bandwidth of the receiving end are all discrete RUs or all are continuous RUs, so that the receiving end can read resource unit allocation information according to the correspondence between discrete RUs or continuous RUs and subcarriers.
  • the bandwidth may include only discrete RUs, or may include discrete RUs and special continuous RUs.
  • the user field includes RU type indication information, which is used to indicate that the RU allocated by the station corresponding to the user field is a discrete RU or a continuous RU.
  • the bandwidth can support mixed transmission of discrete RUs and continuous RUs, that is, the bandwidth can include both discrete RUs and continuous RUs.
  • the RU type indication information in the user field enables the receiving end to determine whether the allocated RU is a discrete RU or a continuous RU, so that the receiving end (such as a station) can follow the corresponding relationship between discrete RUs or continuous RUs and subcarriers, Read the resource unit allocation information to accurately obtain the subcarrier range allocated to its own resource unit.
  • the bandwidth is 20MHz
  • the 20MHz includes discrete 52-tone RU, discrete 52-tone RU, continuous 26-tone RU, continuous 52-tone RU, and continuous 52-tone RU, which are allocated to sites 1-5 respectively.
  • the resource unit allocation subfield is index 00001111 in index table 6 .
  • the RU type indication information in the user fields of site 1 and site 2 indicates that the RU type is a discrete RU
  • the RU type indication information in the user fields of site 3, site 4 and site 5 indicates that the RU type is a continuous RU.
  • site 1 and site 2 can read the resource unit allocation information according to the corresponding relationship between discrete RUs and subcarriers, and determine the subcarrier range of their assigned discrete RUs and the position of pilot subcarriers in the bandwidth;
  • site 3, site 4 and station 5 can read resource unit allocation information according to the correspondence between continuous RUs and subcarriers, and determine the subcarrier range of discrete RUs they are allocated and the position of pilot subcarriers in the bandwidth.
  • the trigger frame sent by the access point to the station includes RU type indication information.
  • the trigger frame includes a common field and a user information list field.
  • the common field in the trigger frame includes RU type indication information, which is used to indicate that the RUs included in the bandwidth are all discrete RUs or all are continuous RUs.
  • the RU type indication information indicates that the RUs included in the bandwidth are all discrete RUs
  • the bandwidth may include only discrete RUs, or may include discrete RUs and special continuous RUs.
  • the bandwidth may include only discrete RUs, or may include discrete RUs and special continuous RUs.
  • the trigger frame includes a user information list field
  • the user information list field includes one or more user fields
  • the user field includes RU type indication information, which is used to indicate that the user field corresponds to the site allocated.
  • RU is discrete RU or continuous RU.
  • the bandwidth can support mixed transmission of discrete RUs and continuous RUs, that is, the bandwidth can include both discrete RUs and continuous RUs.
  • the RU type indication information in the user field enables the receiving end to determine whether the allocated RU is a discrete RU or a continuous RU, so that the receiving end can obtain resource unit allocations according to the correspondence between discrete RUs or continuous RUs and subcarriers information to accurately obtain the subcarrier range allocated to its own resource unit.
  • the trigger frame includes a user information list field
  • the user information list field includes a plurality of user fields and a special user field.
  • the site ID included in the special user field is the special site ID.
  • the special site identifier can be, for example, but not limited to, 2046.
  • the special user field is used to indicate that the RU allocated to the site corresponding to the user field before the special user field is a discrete RU, and the RU allocated to the site corresponding to the user field following the special user field is a continuous RU; or.
  • the special user field is used to indicate that the RU allocated to the site corresponding to the user field preceding the special user field is a continuous RU, and the RU allocated to the site corresponding to the user field following the special user field is a discrete RU.
  • the user fields of the sites where the part of the allocated RUs include discrete RUs do not need additional bits to carry the RU type indication information, and this part is A station whose allocated RUs include discrete RUs can determine whether the allocated RUs are discrete RUs according to a special user field, thereby saving the overhead of user fields.
  • PPDU includes Legacy Short Training Field (L-STF), Legacy Long Training Field (L-LTF), Legacy Signal Field (L-SIG), and repeated legacy signaling field (RL-SIG), universal signaling field U-SIG (universal SIG, U-SIG), ultra-high throughput signaling field or extremely high throughput signaling field (extremely high throughput, EHT-SIG), EHT short Training field (EHT-STF), EHT long training field (EHT-LTF) and data (data).
  • L-STF Legacy Short Training Field
  • L-LTF Legacy Long Training Field
  • L-SIG Legacy Signal Field
  • RL-SIG repeated legacy signaling field
  • U-SIG universal signaling field U-SIG (universal SIG, U-SIG)
  • ultra-high throughput signaling field or extremely high throughput signaling field extreme high throughput
  • EHT-SIG EHT short Training field
  • EHT-LTF EHT long training field
  • data data
  • L-STF, L-LTF, L-SIG, RL-SIG, U-SIG, EHT-SIG, EHT-STF, EHT-LTF are parts of the physical layer header (or preamble) of the PPDU structure.
  • L-STF, L-LTF, and L-SIG can be understood as traditional preamble fields, which are used to ensure the coexistence of new equipment and traditional equipment.
  • RL-SIG is used to enhance the reliability of legacy signaling fields.
  • U-SIG and EHT-SIG are signaling fields.
  • U-SIG is used to carry some public information.
  • the EHT-SIG includes resource allocation information, user information, and information indicating data demodulation.
  • the EHT-STF, EHT-LTF and Data fields may be indicated in the EHT-SIG to be transmitted in discrete RUs. In this way, it is convenient for the receiving end to receive EHT-STF, EHT-LTF and Data field transmission according to the discrete RU receiving mode.
  • the bandwidth is greater than or equal to 40MHz.
  • the RUs allocated to a site include discrete RUs, and the discrete RUs include multiple sub-RUs, and each of the multiple sub-RUs is located within a different 20MHz of the bandwidth, respectively.
  • the station assigned the discrete RU transmits the PPDU to the access point. Specifically, the station transmits the traditional preamble part of the PPDU at the 20MHz where the multiple sub-RUs of the allocated discrete RUs are located, which can expand the transmission bandwidth of the traditional preamble, thereby increasing the transmission power of the traditional preamble.
  • a legacy preamble on 20MHz also protects sub-RUs located on that 20MHz.
  • the symbol length of the EHT-LTF in the PPDU is 12.8 microseconds (4X symbols), or 6.4 microseconds (2X symbols), excluding the guard interval.
  • the receiver of the PPDU such as a station, does not perform a smoothing operation when performing channel estimation. This avoids inaccurate channel estimation due to discontinuous subcarriers of discrete RUs.
  • the frequency mapping in the space-frequency mapping needs to be mapped according to the subcarriers of discrete RUs.
  • the frequency mapping in the space-frequency inverse mapping needs to be inversely mapped according to the subcarriers of the discrete RUs.
  • the AP and the STA may negotiate through at least one of an association request frame, an association response frame or a beacon frame to negotiate whether to support discrete RUs. In this way, whether to allocate discrete RUs to users can be flexibly selected, thereby making the allocation of resource units more flexible.
  • the methods provided by the embodiments of the present application are respectively introduced from the perspectives of access points and sites.
  • the access point and the site may include hardware structures and software modules, and implement the above functions in the form of hardware structures, software modules, or hardware structures plus software modules.
  • a certain function among the above functions may be implemented in the form of a hardware structure, a software module, or a hardware structure plus a software module.
  • the apparatus 1000 for sending resource scheduling information in this embodiment of the present application includes a processing unit 1001 and a sending unit 1002.
  • the processing unit 1001 is configured to be dividing a plurality of resource units to generate resource scheduling information;
  • the resource scheduling information includes: resource unit allocation information for indicating one or more resource units and site information of a site to which the one or more resource units are allocated,
  • the one or more resource units allocated to a site include at least one discrete resource unit, and the discrete resource unit includes multiple sub-carrier groups that are discrete in the frequency domain; one of the sub-carrier groups includes one subcarriers, or at least two consecutive subcarriers;
  • the sending unit 1002 is configured to send the resource scheduling information.
  • the apparatus 1000 for sending the resource scheduling information is a communication apparatus, and the communication apparatus may be, for example, the communication apparatus 200 shown in FIG. 2 .
  • the communication device may be a station or an access point.
  • the processing unit 1001 of the device for sending the resource scheduling information can be deployed on the processor 201 of the communication device 200, and the sending unit 1002 of the device for sending the resource scheduling information can be deployed on the transceiver 205 of the communication device.
  • An apparatus 1100 for receiving resource scheduling information includes a receiving unit 1101 and a processing unit 1102.
  • the receiving unit 1101 is configured to receive resource scheduling information.
  • the scheduling information includes: resource unit allocation information for indicating one or more resource units and site information of a station to which the one or more resource units are allocated, wherein the one or more resource units to which a station is allocated , including at least one discrete resource unit, the discrete resource unit includes a plurality of discrete sub-carrier groups in the frequency domain; one of the sub-carrier groups includes one sub-carrier, or at least includes two consecutive sub-carriers; processing unit 1102 is configured to determine the allocation situation of resource units according to the resource scheduling information.
  • the apparatus 1100 for receiving the resource scheduling information is a communication apparatus, and the communication apparatus may be, for example, the communication apparatus 200 shown in FIG. 2 .
  • the communication device may be a station or an access point.
  • the processing unit 1101 of the device for receiving the resource scheduling information may be deployed in the processor 201 of the communication device, and the sending unit 1102 of the device for receiving the resource scheduling information may be deployed in the transceiver 205 of the communication device.
  • discrete RUs are defined, and discrete RUs can be allocated to sites, that is, multiple subcarriers or multiple subcarrier groups that are discrete in the frequency domain can be allocated to a site, so that the site can be allocated discrete RUs.
  • the allocated frequency domain resources are more flexible and are not limited to one or two consecutive frequency domain resources, so that the frequency domain resources can be used more fully and flexibly, and the frequency diversity of the RUs allocated by a single user can be improved.
  • the subcarriers of the RU cover a wider frequency range, thereby improving the reliability of transmission.
  • the discrete RU includes N subcarriers.
  • the number of MHz occupied by the discrete RU is greater than the number of MHz occupied by the continuous RU with the number of subcarriers being N.
  • the minimum granularity of the MHz number is 1.
  • the number of MHz occupied by the discrete RU refers to the number of MHz occupied by the N subcarriers of the discrete RU.
  • the bandwidth includes multiple MHz. On one MHz, at least one sub-carrier of a discrete RU is distributed, even if the sub-carrier of the discrete RU does not occupy the one MHz, the one MHz is included in the number of MHz occupied by the discrete RU.
  • the maximum power spectral density refers to the maximum transmit power of 1MHz.
  • the minimum particle size for maximum power spectral density is 1 MHz.
  • the transmit power of 1 MHz for discrete RUs and continuous RUs including the same number of subcarriers, the number of MHz occupied by the discrete RUs is greater than the number of MHz occupied by the continuous RUs. In this way, under the condition of the same maximum power spectral density, the total transmit power of discrete RUs is higher than that of continuous RUs. Moreover, compared with continuous RUs, when discrete RUs are used for data transmission, the transmit power of a single RU can be increased, thereby increasing the transmit power on a single subcarrier and improving the equivalent signal-to-noise ratio (Singal to noise ratio, SNR). .
  • SNR equivalent signal-to-noise ratio
  • the embodiments of the present application further provide a computer-readable storage medium on which a computer program is stored, and when the computer-readable storage medium is executed by a computer, implements the functions of any of the foregoing method embodiments.
  • the embodiments of the present application further provide a computer program product, which implements the functions of any of the foregoing method embodiments when the computer program product is executed by a computer.
  • Embodiments of the present application further provide a processor for performing steps that can be performed by a device for sending resource scheduling information in any of the foregoing method embodiments or for performing receiving of available resource scheduling information in any of the foregoing method embodiments steps performed by the device.
  • the process of sending and receiving the above-mentioned information in the above-mentioned methods can be understood as the process of outputting the above-mentioned information by the processor, and the process of receiving the above-mentioned information input by the processor.
  • the processor when outputting the above-mentioned information, the processor outputs the above-mentioned information to the transceiver for transmission by the transceiver.
  • the transceiver receives the above-mentioned information and inputs it into the processor. Furthermore, after the transceiver receives the above-mentioned information, the above-mentioned information may require other processing before being input to the processor.
  • the operations of transmitting, sending and receiving involved in the processor can be understood more generally as
  • the processor outputs and receives, inputs, etc. operations, rather than the transmit, transmit, and receive operations directly performed by the radio frequency circuit and antenna.
  • the above-mentioned processor may be a processor specially used to execute these methods, or may be a processor that executes computer instructions in a memory to execute these methods, such as a general-purpose processor.
  • the above-mentioned memory can be a non-transitory (non-transitory) memory, such as a read-only memory (read only memory, ROM), which can be integrated with the processor on the same chip, or can be respectively arranged on different chips, the present invention
  • ROM read-only memory
  • the embodiment does not limit the type of the memory and the setting manner of the memory and the processor.
  • An embodiment of the present application further provides a chip system, where the chip system includes a processor and an interface, and is used to support a communication transmission device to implement the functions involved in the access point or site in any of the above method embodiments, for example, to determine or process the above At least one of the data and information involved in the method.
  • the chip system further includes a memory for storing necessary information and data of the aforementioned communication device.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • the embodiment of the present application provides a functional entity, and the functional entity is used to implement the above-mentioned resource scheduling method.
  • the size of the sequence numbers of the above-mentioned processes does not mean the sequence of execution, and the execution sequence of each process should be determined by its functions and internal logic, and should not be dealt with in the embodiments of the present application. implementation constitutes any limitation.
  • the disclosed system, apparatus and method may be implemented in other manners.
  • the apparatus embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented.
  • the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and components shown as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium.
  • the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution.
  • the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program codes .
  • the modules in the apparatus of the embodiment of the present application may be combined, divided and deleted according to actual needs.

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Abstract

本申请提供了一种资源调度方法及相关装置。方法包括：基于待分配的频域资源被划分的多个资源单元，生成资源调度信息；资源调度信息包括：用于指示一个或多个资源单元的资源单元分配信息和被分配一个或多个资源单元的站点的站点信息，其中，一个站点被分配的一个或多个资源单元中，包括至少一个离散资源单元，离散资源单元包括多个在频域上离散的子载波组；一个子载波组包括一个子载波，或者至少包括两个连续的子载波；发送资源调度信息。这样单个资源单元覆盖的频率范围更广，能够提升传输的可靠性。本申请的方案可以应用于支持IEEE 802.11下一代WiFi EHT协议，比如802.11be等802.11协议的无线局域网系统。

Description

资源调度方法及相关装置
本申请要求于2020年07月30日提交中国国家知识产权局、申请号为202010753669.3、发明名称为“资源调度方法及相关装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及无线局域网络技术领域，尤其涉及一种资源调度方法及相关装置。
背景技术
无线局域网(wireless local area network，WLAN)发展至今，新引入了正交频分多址(orthogonal frequency division multiple access，OFDMA)技术，整个带宽被分为多个资源单元(resource unit,RU)，也就是说，用户频域资源的分配并不是以信道为单位，而是以资源单元为单位。例如，一个20MHz信道内，可以包含多个资源单元(resource unit,RU)，形式可以是26-tone RU、52-tone RU、106-tone RU等。其中，tone表示子载波个数。此外，RU也可以是242-tone RU、484-tone RU、996-tone RU等形式。这些RU由一段或两段连续的频域资源组成。这样的RU分配的方式过于简单，RU传输的可靠性较低。
发明内容
本申请实施方式提供了一种资源调度方法及相关装置，能够提升RU传输的可靠性。
第一方面，本申请实施方式提供了一种资源调度方法，包括：基于待分配的频域资源被划分的多个资源单元，生成资源调度信息；所述资源调度信息包括：用于指示一个或多个资源单元的资源单元分配信息和被分配所述一个或多个资源单元的站点的站点信息，其中，一个站点被分配的所述一个或多个资源单元中，包括至少一个离散资源单元，离散资源单元包括在频域上离散的多个子载波；或者说所述离散资源单元包括多个在频域上离散的子载波组；一个所述子载波组包括一个子载波，或者至少包括两个连续的子载波；发送所述资源调度信息。
第二方面，本申请实施方式提供了一种资源调度信息获取方法，包括：接收资源调度信息，所述资源调度信息包括：用于指示一个或多个资源单元的资源单元分配信息和被分配所述一个或多个资源单元的站点的站点信息，其中，一个站点被分配的所述一个或多个资源单元中，包括至少一个离散资源单元，离散资源单元包括在频域上离散的多个子载波；或者说所述离散资源单元包括多个在频域上离散的子载波组；一个所述子载波组包括一个子载波，或者至少包括两个连续的子载波；根据所述资源调度信息确定资源单元的分配情况。
第三方面，本申请实施方式提供了一种资源调度信息的发送装置，包括处理单元和发送单元，处理单元用于基于待分配的频域资源被划分的多个资源单元，生成资源调度信息；所述资源调度信息包括：用于指示一个或多个资源单元的资源单元分配信息和被分配所述一个或多个资源单元的站点的站点信息，其中，一个站点被分配的所述一个或多个资源单 元中，包括至少一个离散资源单元，离散资源单元包括在频域上离散的多个子载波；或者说所述离散资源单元包括多个在频域上离散的子载波组；一个所述子载波组包括一个子载波，或者至少包括两个连续的子载波；发送单元用于发送所述资源调度信息。
第四方面，本申请实施方式提供了一种资源调度信息的接收装置，包括接收单元和处理单元，接收单元用于接收资源调度信息，所述资源调度信息包括：用于指示一个或多个资源单元的资源单元分配信息和被分配所述一个或多个资源单元的站点的站点信息，其中，一个站点被分配的所述一个或多个资源单元中，包括至少一个离散资源单元，离散资源单元包括在频域上离散的多个子载波；或者说所述离散资源单元包括多个在频域上离散的子载波组；一个所述子载波组包括一个子载波，或者至少包括两个连续的子载波；处理单元用于根据所述资源调度信息确定资源单元的分配情况。
本申请第一方面的资源调度方法可以由上述第三方面的资源调度信息的发送装置实现，本申请第二方面的资源调度信息获取方法可由上述第四方面的资源调度信息的接收装置实现。
本申请第三方面的资源调度信息的发送装置可以理解为一种通信装置，该资源调度信息的发送装置可以为站点也可以为接入点。
本申请第四方面的资源调度信息的接收装置以理解为一种通信装置，该资源调度信息的发送装置可以为站点也可以为接入点。
本申请实施例的技术方案中，定义了离散RU，并能够实现给站点分配离散的RU，也即能够实现将在频域上离散的多个子载波或多个子载波组分配给一个站点，使得站点所被分配的频域资源更灵活，不局限于一段或两段连续的频域资源，从而可以更充分、更灵活的利用频域资源，提升单个用户所被分配的RU的频率多样性，单个RU的子载波覆盖的频率范围更广，从而能够提升传输的可靠性。
可选的，一个离散资源单元至少包括26个子载波。
本申请中，还提供连续RU的定义。本申请中的连续RU是指，由连续的多个子载波组成的RU，或者连续RU是由两组连续子载波组组成的RU，每组所述连续子载波组包括的多个子载波是连续的，两组子载波组之间仅被保护(Guard)子载波，空子载波，或者直流(direct current，DC)子载波间隔。802.11ax中支持的RU均可理解为连续RU。连续RU又可称作普通RU(common RU，CRU)。当然在其他实施例中，连续RU也可以的名称也可以为其他名称，本申请不限定连续RU的名称。
可选的，离散RU包括N个子载波。该离散RU所占的MHz数，大于子载波的数量为N的连续RU所占的MHz数。MHz数的最小粒度为1。
离散RU所占的MHz数是指离散RU的N个子载波，所占的MHz数。带宽包括多个MHz，一个MHz上，分布有离散RU的至少一个子载波，即使该离散RU的子载波并没有占满该一个MHz，该一个MHz计入离散RU所占的MHz数。
最大功率谱密度是指1MHz的最大发送功率。最大功率谱密度的最小粒度为1MHz。在不改变1MHz的发送功率的情况下，对于包含相同数量的子载波的离散RU和连续RU，离散RU所占的MHz数，大于连续RU所占的MHz数。这样在最大功率谱密度相同的情况下，离散RU的总发送功率高于连续RU的总发送功率。而且，相比于连续RU，采用离 散RU进行数据传输时，能够增大单个RU的发送功率，从而增加单个子载波上的发送功率，提升了等效信噪比(singal to noise ratio，SNR)。
在一些实施方式中，所述一个站点被分配的至少一个离散资源单元中，包括导频子载波。这样接收资源调度信息的接收装置(例如站点)能够根据导频子载波进行相位估计。
下面提供一些与离散资源单元的子载波的分布方式有关的可选实施方式。
在一些可选的实施方式中，所述离散资源单元中的导频子载波的位置，与该导频子载波作为连续资源单元中的导频子载波时的位置相同。这样在离散RU的导频子载波位置与连续RU中的导频子载波的位置相同的前提下，保证每个离散RU都有导频子载波，能够使得PPDU中的EHT-STF/EHT-LTF序列不变，实现离散RU与连续RU混传，也能够使得站点更好地进行相位纠正。
在一些可选的实施方式中，离散资源单元包括的多个离散的子载波组中，两两相邻的子载波组之间间隔的子载波数量相同，这样便于资源单元分配信息指示离散资源单元中的子载波组，也便于接收端接收各个子载波组。或者，离散资源单元包括的多个离散的子载波组中，两两相邻的子载波组之间间隔的子载波数量不相同，这样频域资源的分配方式更灵活。两两相邻的子载波组是指一个离散RU的两个相邻的子载波组。
在一些可选的实施方式中，每个所述子载波组包括的子载波的数量相同，这样便于资源单元分配信息指示每个子载波组中的子载波的数量。或者至少有两个子载波组包括的子载波的数量不同，这样频域资源的分配方式更灵活。
在一些可选的实施方式中，离散RU包括多个子RU，每个子RU包括2个子载波子组，每个子载波子组包括多个子载波。一个子RU所包括的2个子载波子组中，一个子载波子组中的子载波的索引为奇数，另一个子载波子组中的子载波的索引为偶数。可以理解，一个子载波子组的多个子载波中，两两相邻的子载波之间间隔1个子载波。多个子RU中的每个子RU包括至少一个导频子载波。这样导频子载波分布平均，有助于提升相位纠正的准确性。两两相邻的子载波是指一个离散RU的两个相邻的子载波。
进一步的，多个子RU中的每个子RU位于不同的20MHz中。这样，单个RU的子载波覆盖的频率范围更广，从而能够更加有效地提升传输的可靠性。
下面提供一些与指示离散资源单元有关的可选实施方式。
在一些可选的实施方式中，所述资源单元分配信息指示所述离散资源单元的索引。这样的指示方式简单，接收资源调度信息的接收装置(例如站点)能够更方便的获取被分配的离散资源单元。
在一些可选的实施方式中，所述资源单元分配信息用于指示所述离散资源单元中，起始子载波的索引和子载波间隔；或所述资源单元分配信息用于指示所述离散资源单元中，结束子载波的索引和子载波间隔；或所述资源单元分配信息用于指示所述离散资源单元中，起始子载波的索引、结束子载波的索引和子载波间隔；或所述资源单元指示所述离散资源单元中，各个子载波的索引。
其中，所述起始子载波为所述离散资源单元的最低频率的子载波，所述结束子载波为 所述离散资源单元的最高频率的子载波。两两相邻子载波之间间隔的属于其他资源单元的子载波的数量，或者指示两两相邻子载波的索引之差。
在一些可选的实施方式中，所述资源单元分配信息用于指示所述离散资源单元中，起始子载波组中第一个子载波的索引，子载波组中包括的子载波的数量，子载波组间隔；或者，所述资源单元分配信息用于指示所述离散资源单元中，起始子载波组中最后一个子载波的索引，子载波组中包括的子载波的数量，子载波组间隔；或者，所述资源单元分配信息用于指示离散资源单元中，结束子载波组中第一个子载波的索引，子载波组中包括的子载波的数量，子载波组间隔；或者，所述资源单元分配信息用于指示离散资源单元中，结束子载波组中最后一个子载波的索引，子载波组中包括的子载波的数量，子载波组间隔。
其中，起始子载波组为离散单元的最低频率的子载波组，结束子载波组为离散单元的最高频率的子载波组。所述子载波组间隔用于指示两两相邻子载波组之间间隔的子载波的数量。保护子载波、空子载波和直流子载波的数量不包括在内。
在一些可选的实施方式中，所述资源调度信息还包括资源单元类型指示信息，所述资源单元类型指示信息用于指示给所述站点分配的资源单元是离散资源单元还是连续资源单元。该RU类型指示信息也可以理解为离散RU/连续RU指示信息。
在下行多用户传输的场景下，PPDU的信令字段包括RU类型指示信息。
具体地，PPDU的信令字段包括通用信令字段U-SIG(universal SIG，U-SIG)和超高吞吐率信令字段或极高吞吐率信令字段(extremely high throughput，EHT-SIG)。EHT-SIG包括公共字段和用户特定字段。
在一种可能的实现方式中，U-SIG或公共字段包括RU类型指示信息，用于指示该带宽包括的RU均为离散RU或均为连续RU。这样，能够指示接收端带宽包括的RU均为离散RU或均为连续RU，从而能够使得接收端能够按照离散RU或连续RU与子载波的对应关系，读取资源单元分配信息。RU类型指示信息指示带宽包括的RU均为离散RU时，带宽可以仅包括离散RU，也可以包括离散RU和特殊的连续RU。
在另一种可能的实现方式中，用户字段包括RU类型指示信息，用于指示该用户字段对应的站点分配的RU为离散RU或连续RU。这样，带宽能够支持离散RU和连续RU的混合传输，也即带宽可既包括离散RU也包括连续RU。而且，用户字段中的RU类型指示信息使得接收端能够确定自己被分配的RU为离散RU还是连续RU，从而能够使得接收端(例如站点)能够按照离散RU或连续RU与子载波的对应关系，读取资源单元分配信息，以准确获取分配给自己的资源单元的子载波范围。
在上行多用户传输的场景下，接入点向站点发送的触发帧中包括RU类型指示信息。
在一种可能的实现方式中，触发帧中包括公共字段和用户信息列表字段。在触发帧中的公共字段包括RU类型指示信息。这样，能够指示接收端带宽包括的RU为哪种RU，从而能够使得接收端能够按照离散RU或连续RU与子载波的对应关系，获取资源单元分配信息。RU类型指示信息指示带宽包括的RU均为离散RU时，带宽可以仅包括离散RU，也可以包括离散RU和特殊的连续RU。
在另一种可能的实现方式中，触发帧包括用户信息列表字段，该用户信息列表字段包括一个或多个用户字段，用户字段包括RU类型指示信息，用于指示该用户字段对应的站 点分配的RU为离散RU或连续RU。这样，带宽能够支持离散RU和连续RU的混合传输，也即带宽可既包括离散RU也包括连续RU。而且，用户字段中的RU类型指示信息使得接收端能够确定自己被分配的RU为离散RU还是连续RU，从而能够使得接收端能够按照离散RU或连续RU与子载波的对应关系，获取资源单元分配信息，以准确获取分配给自己的资源单元的子载波范围。
第五方面，本申请实施方式还提供一种通信装置，该通信装置可包括：处理器、收发器，可选的还包括存储器，当所述处理器执行所述存储器中的计算机程序或指令时，使得上述第一方面、第二方面、第五方面、第六方面、第九方面或第十方面的任一实施方式的方法被执行。
第六方面，本申请实施方式还提供一种计算机可读存储介质，所述计算机可读存储介质中存储有计算机指令，所述计算机指令指示通信设备执行上述第一方面和第二方面任一实施方式的方法法。
第七方面，本申请实施方式还提供一种计算机程序产品，所述计算机程序产品包括计算机程序，当所述计算机程序在计算机上运行时，使得所述计算机执行上述第一方面、第二方面、第五方面、第六方面、第九方面或第十方面的任一实施方式的方法。
第八方面，本申请还提供一种处理器，用于执行上述第一方面和第二方面任一种方法。在执行这些方法的过程中，上述方法中有关发送上述信息和接收上述信息的过程，可以理解为由处理器输出上述信息的过程，以及处理器接收输入的上述信息过程。具体来说，在输出上述信息时，处理器将该上述信息输出给收发器，以便由收发器进行发射。更进一步的，该上述信息在由处理器输出之后，还可能需要进行其他的处理，然后才到达收发器。类似的，处理器接收输入的上述信息时，收发器接收该上述信息，并将其输入处理器。更进一步的，在收发器收到该上述信息之后，该上述信息可能需要进行其他的处理，然后才输入处理器。
如此一来，对于处理器所涉及的发射、发送和接收等操作，如果没有特殊说明，或者，如果未与其在相关描述中的实际作用或者内在逻辑相抵触，则均可以更加一般性的理解为处理器输出和接收、输入等操作，而不是直接由射频电路和天线所进行的发射、发送和接收操作。
在具体实现过程中，上述处理器可以是专门用于执行这些方法的处理器，也可以是执行存储器中的计算机指令来执行这些方法的处理器，例如通用处理器。上述存储器可以为非瞬时性(non-transitory)存储器，例如只读存储器(read only memory，ROM)，其可以与处理器集成在同一块芯片上，也可以分别设置在不同的芯片上，本发明实施例对存储器的类型以及存储器与处理器的设置方式不做限定。
第九方面，本申请提供了一种芯片系统，该芯片系统包括处理器和接口，用于支持通信传输设备实现第一方面～第四方面任一方面的方法中所涉及的功能，例如，确定或处理上述方法中所涉及的数据和信息中的至少一种。在一种可能的设计中，所述芯片系统还包括存储器，所述存储器，用于保存前述通信装置的必要的信息和数据。该芯片系统，可以由芯片构成，也可以包括芯片和其他分立器件。
第十方面，本申请提供了一种功能实体，该功能实体用于实现上述第一方面和第二方 面所述的方法。
附图说明
图1为本申请实施例涉及的通信系统的网络架构示意图；
图2为本申请实施例涉及的通信装置的结构示意图；
图3为本申请实施例提供的一种芯片的结构示意图；
图4A为20MHz时的资源单元可能的分配方式的示意图；
图4B为40MHz时的资源单元可能的分配方式的示意图；
图4C为80MHz时的资源单元可能的分配方式的示意图；
图5为本申请实施例的资源调度方法的流程示意图；
图6A为本申请实施例的资源单元分配示意图；
图6B为本申请实施例的资源单元分配示意图；
图6C为本申请实施例的资源单元分配示意图；
图6D为本申请实施例的资源单元分配示意图；
图6E为本申请实施例的资源单元分配示意图；
图7为本申请实施例的资源单元分配示意图；
图8为PPDU的结构示意图；
图9为PPDU的发送过程示意图；
图10为本申请实施例的资源调度信息的发送装置的结构示意图；
图11为本申请实施例的资源调度信息的接收装置的结构示意图。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
本申请实施例提供一种用于无线通信系统的资源调度方法。该无线通信系统可以为无线局域网(Wireless local area network，WLAN)或蜂窝网，该方法可以由无线通信系统中的通信设备或通信设备中的芯片或处理器实现。在无线局域网中，该通信设备支持采用IEEE 802.11系列协议进行通信，IEEE 802.11系列协议包括：802.11be，802.11ax，或802.11a/b/g/n/ac。
以图1为例阐述本申请的资源调度方法可适用的网络结构。图1是本申请实施例提供的网络结构的示意图，该网络结构可以为无线局域网，该网络结构可包括一个或多个接入点(access point，AP)类的站点和一个或多个非接入点类的站点(none access point station，non-AP STA)。为便于描述，本文将接入点类型的站点称为接入点(AP)，非接入点类的站点称为站点(STA)。AP例如为图1中的AP1和AP2，STA例如为图1中的STA1和STA2。
其中，接入点可以为终端设备(如手机)进入有线(或无线)网络的接入点，主要部署于家庭、大楼内部以及园区内部，典型覆盖半径为几十米至上百米，当然，也可以部署于户外。接入点相当于一个连接有线网和无线网的桥梁，主要作用是将各个无线网络客户端连接到一起，然后将无线网络接入以太网。具体的，接入点可以是带有无线保真(wreless-fidelity，WiFi)芯片的终端设备(如手机)或者网络设备(如路由器)。接入点 可以为支持802.11be制式的设备。接入点也可以为支持802.11be、802.11ax、802.11ac、802.11n、802.11g、802.11b及802.11a等802.11家族的多种无线局域网(wireless local area networks，WLAN)制式的设备。本申请中的接入点可以是极高吞吐量(extramely high throughput,EHT)AP，还可以是适用未来某代WiFi标准的接入点。
接入点可包括处理器和收发器，处理器用于对接入点的动作进行控制管理，收发器用于接收或发送信息。
站点可以为无线通讯芯片、无线传感器或无线通信终端等，也可称为用户。例如，站点可以为支持WiFi通讯功能的移动电话、支持WiFi通讯功能的平板电脑、支持WiFi通讯功能的机顶盒、支持WiFi通讯功能的智能电视、支持WiFi通讯功能的智能可穿戴设备、支持WiFi通讯功能的车载通信设备和支持WiFi通讯功能的计算机等等。可选地，站点可以支持802.11be制式。站点也可以支持802.11be、802.11ax、802.11ac、802.11n、802.11g、802.11b及802.11a等802.11家族的多种无线局域网(wireless local area networks，WLAN)制式。
站点可包括处理器和收发器，处理器用于对接入点的动作进行控制管理，收发器用于接收或发送信息。
本申请中的接入点可以是极高吞吐量(extramely high throughput,EHT)STA，还可以是适用未来某代WiFi标准的STA。
例如，接入点和站点可以是应用于车联网中的设备，物联网(IoT，internet of things)中的物联网节点、传感器等，智慧家居中的智能摄像头，智能遥控器，智能水表电表，以及智慧城市中的传感器等。
本申请实施例中的所涉及的接入点和站点又可以统称为通信装置，其可以包括硬件结构、软件模块，以硬件结构、软件模块、或硬件结构加软件模块的形式来实现上述各功能。上述各功能中的某个功能可以以硬件结构、软件模块、或者硬件结构加软件模块的方式来实现。
图2为本申请实施例提供的一种通信装置的结构示意图。如图2所示，该通信装置200可包括：处理器201、收发器205，可选的还包括存储器202。该通信装置可以作为资源调度信息的方式发送装置，也可以作为资源调度信息的接收装置。
所述收发器205可以称为收发单元、收发机、或收发电路等，用于实现收发功能。收发器205可以包括接收器和发送器，接收器可以称为接收机或接收电路等，用于实现接收功能；发送器可以称为发送机或发送电路等，用于实现发送功能。
存储器202中可存储计算机程序或软件代码或指令204，该计算机程序或软件代码或指令204还可称为固件。处理器201可通过运行其中的计算机程序或软件代码或指令203，或通过调用存储器202中存储的计算机程序或软件代码或指令204，对MAC层和PHY层进行控制，以实现本申请下述各实施例提供的资源调度方法。其中，处理器201可以为中央处理器(central processing unit，CPU)，存储器202例如可以为只读存储器(read-only memory，ROM)，或为随机存取存储器(random access memory，RAM)。
本申请中描述的处理器201和收发器205可实现在集成电路(integrated circuit，IC)、模拟IC、射频集成电路RFIC、混合信号IC、专用集成电路(application specific integrated  circuit，ASIC)、印刷电路板(printed circuit board，PCB)、电子设备等上。
上述通信装置200还可以包括天线206，该通信装置200所包括的各模块仅为示例说明，本申请不对此进行限制。
如前所述，以上实施例描述中的通信装置200可以是接入点或者站点，但本申请中描述的通信装置的范围并不限于此，而且通信装置的结构可以不受图2的限制。通信装置可以是独立的设备或者可以是较大设备的一部分。例如所述通信装置的实现形式可以是：
(1)独立的集成电路IC，或芯片，或，芯片系统或子系统；(2)具有一个或多个IC的集合，可选的，该IC集合也可以包括用于存储数据，指令的存储部件；(3)可嵌入在其他设备内的模块；(4)接收机、智能终端、无线设备、手持机、移动单元、车载设备、云设备、人工智能设备等等；(5)其他等等。
对于通信装置的实现形式是芯片或芯片系统的情况，可参见图3所示的芯片的结构示意图。图3所示的芯片包括处理器301和接口302。其中，处理器301的数量可以是一个或多个，接口302的数量可以是多个。接口302用于信号的接收和发送。可选的，该芯片或芯片系统可以包括存储器303。存储器303中用于保存芯片或芯片系统必要的程序指令和数据。
本申请实施例并且不限制权利要求书的保护范围和适用性。本领域技术人员可以在不脱离本申请实施例范围的情况下对本申请涉及的元件的功能和部署进行适应性更改，或酌情省略、替代或添加各种过程或组件。
AP与STA之间可以采用应用正交频分多址(orthogonal frequency division multiple access，OFDMA)。在OFDMA传输场景下，WLAN协议会将频谱带宽划分为若干个资源单元(resource unit，RU)。802.11ax标准规定对于20MHz、40MHz、80MHz、160MHz的带宽，可将带宽划分成多类RU，RU的大小可以是26-tone RU、52-tone RU、106-tone RU，续242-tone RU、484-tone RU、996-tone RU等。其中，tone表示子载波，例如，26-tone RU表示包括连续的26个子载波的RU，或者包括一组连续的13个子载波和另一组连续的13个子载波的RU。
802.11be标准沿用了上述将带宽划分为若干个资源单元的资源分配方式，对于20MHz、40MHz、80MHz、160MHz、320MHz，可将频谱带宽划分成多类RU，RU的大小可以是26-tone RU、52-tone RU、106-tone RU，242-tone RU、484-tone RU、996-tone RU等。该26-tone RU可以被分配给一个用户使用。通常来讲，一个大于等于242-tone的RU可以分配给一个或者多个用户使用。本申请中的用户可理解为STA。带宽上的RU的包括数据(Data)子载波和导频(Pilot)子载波。数据子载波用于承载来自上层的数据信息；导频子载波传递固定值，用于接收端估计相位，进行相位纠正。
当带宽为20MHz时，如图4A所示的，图4A所示为带宽为20MHz时的资源单元可能的分配方式的示意图。整个20MHz带宽可以由整个242-tone RU组成，也可以由26-tone RU、52-tone RU、106-tone RU的各种组合组成。除了带宽用于传输数据的连续RU，此外，还包括一些保护(Guard)子载波，空子载波，或者直流(direct current，DC)子载波。
当带宽为40MHz时，如图4B所示的带宽为40MHz时的资源单元可能的分配方式的示意图。整个带宽大致相当于20MHz的子载波分布的复制。整个40MHz带宽可以由整个 484-tone RU组成，也可以由26-tone RU，52-tone RU，106-tone RU，242-tone RU的各种组合组成。
如图4C所示的带宽为80MHz时的资源单元可能的分配方式的示意图。当信道带宽为80MHz时。整个带宽大致相当于2个40MHz的子载波分布的复制。整个80MHz带宽可以由一整个996-tone RU组成，也可以由484-tone RU、242-tone RU，106-tone RU，52-tone RU，26-tone RU的各种组合组成。
当带宽为160MHz或者80+80MHz时，整个带宽可以看成两个80MHz的子载波分布的复制，整个带宽可以由一整个2*996-tone RU组成，也可以由26-tone RU，52-tone RU，106-tone RU，242-tone RU，484-tone RU，996-tone RU的各种组合组成。2*996-tone RU为由连续的两个996-tone RU子载波组成的RU。
类似的，当带宽为320MHz时，整个带宽可以看成两个160MHz的子载波分布的复制。整个带宽可以由一整个4*996-tone RU组成，也可以由26-tone RU，52-tone RU，106-tone RU，242-tone RU，484-tone RU，996-tone RU的各种组合组成。
下面结合表格列举带宽为20MHz和带宽为40MHz时，带宽上的RU的子载波范围以及导频子载波的位置。
RUX为RU索引，[a,b]代表该RU的子载波范围为从子载波的索引为a到子载波的索引为b的子载波，包含a和b本身；{x,y,…}中的x,y,…为导频子载波的索引。
为便于表述，本申请中将索引为x的子载波，表述为子载波x。
如表1所示，带宽为20MHz时，带宽上的26-tone RU可以为表1中，26-tone RU所在的行的RU1-RU9中的任意一个或多个。每个26-tone RU包括2个导频子载波。
例如，带宽上的26-tone RU为表1中，26-tone RU所在的行的RU1，该26-tone RU的子载波范围为子载波-121至子载波-96，其中，子载波-116和子载波-102为导频子载波。
带宽上的52-tone RU可以为表1中，52-tone RU所在的行的RU1-RU4中的任意一个或多个。每个52-tone RU包括4个导频子载波。
例如，带宽上的52-tone RU为表1中，52-tone RU所在的行的RU1，该52-tone RU的子载波范围为子载波-121至子载波-70，其中，子载波-116、子载波-102、子载波-90和子载波-76为导频子载波。
类似的，带宽上的106-tone RU为可为表1中，106-tone RU所在的行的RU1-RU2中的任意一个或多个。每个106-tone RU包括4个导频子载波。该RU1的子载波范围为子载波-122至子载波-17，其中，子载波-116，子载波-90，子载波-48，子载波-22为导频子载波。该RU2的子载波范围为子载波17-子载波122，其中，子载波22，子载波48，子载波90，子载波116为导频子载波。
带宽上的242-tone RU为可为表1中的242-tone RU1。242-tone RU1的子载波范围为子载波-122至子载波-2，以及子载波2至子载波122，其中子载波-116，子载波-90，子载波-48，子载波-22，子载波22，子载波48，子载波90，子载波116为导频子载波。
表1
Figure PCTCN2021104942-appb-000001
如表2所示，带宽为40MHz时，带宽上的26-tone RU可以为表2中，26-tone RU所在的行的RU1-RU18中的一个或多个。每个26-tone RU包括2个导频子载波。
表2
Figure PCTCN2021104942-appb-000002
Figure PCTCN2021104942-appb-000003
例如，带宽上的26-tone RU为表2中，26-tone RU所在的行的RU1，该26-tone RU的子载波范围为子载波-243至子载波-218，其中，子载波-238和子载波-224为导频子载波。
带宽上的52-tone RU可以为表2中，52-tone RU所在的行的RU1-RU8中的一个或多个。每个52-tone RU包括4个导频子载波。
例如，带宽上的52-tone RU为表2中，52-tone RU所在的行的RU1，该52-tone RU的子载波范围为子载波-243至子载波-192，其中，子载波-238，子载波-224，子载波-212和子载波-198为导频子载波。
类似的，带宽上的106-tone RU为可为表2中，106-tone RU所在的行的RU1-RU4中的任意一个或多个。每个106-tone RU包括4个导频子载波。带宽上的242-tone RU可以为表2中，第1列的242-tone RU所在的行中的RU1和RU2中的一个或多个。带宽上的484-tone RU可为表2中，第1列的484-tone RU所在的行中的RU1。
带宽为80MHz、160MHz、320MHz时，标准也规定了带宽上的可能包含的RU、该可能包含的RU对应的子载波范围以及导频子载波。此处不再一一列举。
上述表1和表2中的26-tone RU、52-tone RU、106-tone RU、242-tone RU和484-tone RU是由连续的多个子载波构成的RU，或者由两组连续的子载波组构成的RU，这样的RU可 以理解为连续RU。
可以看出，现有的资源单元的分配，仅支持将连续RU分配给一个或多个用户，资源单元分配的方式过于简单，资源单元传输的可靠性较低。
本申请实施例提供一种基于离散RU的资源分配方案，能够使得资源单元传输的可靠性更好。
本申请中的连续RU是指，由连续的多个子载波组成的RU，或者连续RU是由两组连续子载波组组成的RU，每组所述连续子载波组包括的多个子载波是连续的，两组子载波组之间仅被保护(Guard)子载波，空子载波，或者直流(direct current，DC)子载波间隔。802.11ax中支持的RU均可理解为连续RU。连续RU又可称作普通RU(common RU，CRU)。当然在其他实施例中，连续RU也可以的名称也可以为其他名称，本申请不限定连续RU的名称。
本申请中的离散RU，包括在频域上离散的多个子载波。该离散的多个子载波可以是部分离散的，也可以是完全离散的。也即是说，该离散的多个子载波可以包括一部分子载波是在频率上连续的，且包括一部分子载波在频率上是不连续的；该离散的多个子载波也可以在频率上完全不连续。
或者说，离散RU包括在频域上离散的多个子载波组，一个子载波组包括一个子载波或连续的多个子载波。多个子载波组中的各个子载波包括的子载波的数量可以是相同的也可以是不同的。例如，每个子载波组的子载波数量可以均为1，又例如，对于26-tone RU，可以包括4个子载波组，4个子载波组中的子载波数量可以依次为7，7，6，6。
离散RU又可称作(discontiguous RU，DRU)。当然在其他实施例中，离散RU也可以的名称也可以为其他名称，本申请不限定离散RU的名称。本申请中的一个离散RU包括的子载波组的数量大于2。
现有的资源分配方式中所示的仅包括2组连续的子载波组的RU非本申请实施例涉及的离散RU。例如一组连续的13个子载波和另一组连续的13个子载波组成的26-tone RU(例如表1中26-tone RU所在的行中的RU5)为连续RU而不是离散RU。一组连续的121个子载波和另一组连续的121个子载波组成的242-tone RU(例如表1中的242-tone RU所在的行中的RU1)为连续RU而不是离散RU。一组连续的242个子载波和另一组连续的242个子载波组成的484-tone RU(例如表2中484-tone RU所在的行中的RU1)为连续RU而不是离散RU。类似的，一组连续的484个子载波和另一组连续的484个子载波组成的996-tone RU为连续RU而不是离散RU。这样的RU也可以称为特殊的连续RU或者广义的连续RU。
具体的，本申请实施例的资源分配方案可以通过本申请实施例的资源调度方法实现。如图5所示的资源调度方法的流程示意图，资源调度方法包括：
501、接入点基于待分配的频域资源被划分的多个RU，生成资源单元调度信息。
资源调度信息包括：用于指示一个或多个RU的资源单元分配信息，和被分配所述一个或多个RU的站点的站点信息，其中，一个站点被分配的所述一个或多个RU中，包括至少一个离散RU。
待分配的频域资源可以是完整的带宽，也可以是带宽上没有被打孔的频域资源。
一个站点被分配的所述一个或多个RU中，包括至少一个离散RU，是指，该一个站点可以仅被分配一个离散RU，也可以被分配多个离散RU，还可以被分配至少一个离散RU和至少一个连续RU。
502、接入点发送所述资源调度信息。
对应的，站点接收该调度信息。
可选的，资源单元调度信息可承载在物理层协议数据单元(PHY protocol data unit，PPDU)的信令字段中。信令中的包括资源单元分配子字段和用户字段。资源单元分配子字段指示一个或多个RU的资源单元分配信息。用户字段包括被分配所述一个或多个RU的站点的站点信息。
可选的，该资源单元调度信息也可以承载在触发帧的用户字段中。
503、站点根据资源单元调度信息，确定自身被分配的一个或多个RU。
站点根据所述资源调度信息确定资源单元的分配情况。具体的，站点能够根据自己的站点信息以及资源单元分配信息确定自己所被分配的一个或多个RU包括的子载波数量，以及RU在带宽中的位置。
对于某一子载波数量的RU(离散RU或连续RU)，位于带宽上的某一位置时，该RU的子载波的在带宽中的分布情况是标准规定的。这样站点能够根据自身被分配的一个或多个RU的子载波数量以及自身被分配的一个或多个RU在带宽中的位置，确定自身被分配的一个或多个RU的子载波在带宽中的位置。
这样，本申请中，能够实现给站点分配离散的RU，也即能够实现将在频域上离散的多个子载波或多个子载波组分配给一个站点，使得站点所被分配的频域资源更灵活，不局限于一段或两段连续的频域资源，从而可以更充分、更灵活的利用频域资源，提升单个用户所被分配的RU的频率多样性，单个RU的子载波覆盖的频率范围更广，从而能够提升传输的可靠性。
应理解，上述的资源调度方法以AP向STA发送资源调度信息的实施例进行说明，该方法也适用于AP向AP发送资源调度信息的场景，STA向STA发送资源调度信息的场景。
可选的，离散RU包括N个子载波。该离散RU所占的MHz数，大于子载波的数量为N的连续RU所占的MHz数。MHz数的最小粒度为1。
离散RU所占的MHz数是指离散RU的N个子载波，所占的MHz数。带宽包括多个MHz，一个MHz上，分布有离散RU的至少一个子载波，即使该离散RU的子载波并没有占满该一个MHz，该一个MHz计入离散RU所占的MHz数。
例如，离散26-tone RU的26个子载波，包括4个子载波组，按照频率由低至高的顺序，第1-7个子载波是连续的，第1-7个子载波为一个子载波组；第8-14个子载波是连续的，第8-14个子载波为一个子载波组；第15-20个子载波是连续的，第15-20个子载波是一个子载波组，第21-26个子载波是连续的，第21-26个子载波是一个子载波组。
第1-7个子载波所占的1MHz内，仅有这7个子载波为该离散26-tone RU的子载波，即使该第1-7个子载波对应的频率仅为0.5MHz，也即该第1-7个子载波并没有占满该1MHz，由于MHz数的最小粒度为1，该第1-7个子载波所占的MHz数也为1MHz。
类似的，第8-14个子载波所占的1MHz内，仅有这7个子载波为该离散26-tone RU的子载波，第8-14个子载波所占的MHz数也为1MHz。第15-20个子载波所占的1MHz内，仅有这7个子载波为该离散26-tone RU的子载波，第15-20个子载波所占的MHz数也为1MHz。第21-26个子载波所占的1MHz内，仅有这7个子载波为该离散26-tone RU的子载波，第21-26个子载波所占的MHz数也为1MHz。
这样，该离散26-tone RU所占的MHz数为4MHz。
在室内低功耗(Low Power Indoor,LPI)通信的场景下，限制发送的最大功率和最大功率谱密度。相比最大功率，最大功率谱密度的限制更加严格，允许发送的最大功率通常更多的受功率谱密度限制。受最大功率谱密度的限制，单个连续RU的发送功率受限。
最大功率谱密度是指1MHz的最大发送功率。最大功率谱密度的最小粒度为1MHz。在不改变1MHz的发送功率的情况下，对于包含相同数量的子载波的离散RU和连续RU，离散RU所占的MHz数，大于连续RU所占的MHz数。这样在最大功率谱密度相同的情况下，离散RU的总发送功率高于连续RU的总发送功率。
因此，相比于连续RU，采用离散RU进行数据传输时，能够增大单个RU的发送功率，从而增加单个子载波上的发送功率，提升了等效信噪比(singal to noise ratio，SNR)。
一个站点被分配的资源单元包括至少一个离散RU，站点可利用该至少一个离散RU进行上行传输。站点在通过离散RU进行上行传输时，离散RU的总发送功率，可大于与该离散RU大小相同的连续RU的总发送功率，从而能够在不增加最大功率谱密度的情况下，实现增大单个RU的发送功率。其中，与该离散RU的大小相同的连续RU，可理解为，与离散RU的子载波的数量相同的连续RU。
本申请实施例中，一个站点被分配的至少一个离散RU中，包括导频子载波。这样，站点能够根据该导频子载波估计相位，进行相位纠正。
下面提供一些离散RU的子载波的分布方式。
在一些可能的实现方式中，一个离散RU包括的多个离散的子载波组中，两两相邻的子载波组之间间隔的子载波数量相同，每个子载波组包括1个子载波。两两相邻的子载波组是指一个离散RU的两个相邻的子载波组。或者说，一个离散RU包括的多个子载波中，两两相邻的子载波之间间隔的子载波数量是相同的，两两相邻的子载波是指一个离散RU的两个相邻的子载波。
两两相邻的子载波之间间隔的子载波数量，例如可以间隔1个子载波，2个子载波，3个子载波。本申请实施例中，两两相邻的子载波组之间间隔的子载波数量为，两两相邻的子载波组之间间隔的属于其他RU的子载波的数量。两两相邻的子载波组之间间隔的子载波可以不包括连续RU场景下的保护子载波、空子载波和直流子载波；两两相邻的子载波组之间间隔的子载波的数量也不包括两两相邻的子载波组之间间隔的保护子载波、空子载波和直流子载波的数量。或者，两两相邻的子载波组之间间隔的子载波可以包括连续RU场景下的保护子载波、空子载波和直流子载波；两两相邻的子载波组之间间隔的子载波的数量可以包括两两相邻的子载波组之间间隔的保护子载波、空子载波和直流子载波的数量。
连续RU场景可理解为将频域资源划分为一个或多个连续的RU的场景，例如按照图4A至图4C的方式划分RU的场景。
可选的，一个离散RU包括至少一个导频子载波。离散RU中的导频子载波在带宽中的位置，与相同带宽中的连续RU的导频子载波在带宽中的位置可以是不同的。例如，如表1所示，带宽为20MHz时，连续RU的导频子载波可能是子载波-116，子载波-102，子载波-90，子载波-76，子载波-62，子载波-48，子载波-36，子载波-22，子载波-10，子载波10，子载波22，子载波36，子载波48，子载波62，子载波76，子载波90中的至少一个；带宽为20MHz时，离散RU的导频子载波并不一定是这些位置的导频子载波。
一种实现中，离散RU的多个子载波组中，每个子载波组包括1个子载波。这时，离散RU也可以描述为包括多个在频域上离散的子载波。
示例性的，一个离散RU包括多个在频域上离散的子载波，且两两相邻的子载波组之间的间隔的子载波的数量为3。也即离散RU的N个子载波中，两两相邻的子载波之间间隔3个子载波。这样，对于包含相同数量的子载波的离散RU和连续RU，离散RU所占的兆赫兹数为连续RU所占的兆赫兹数的4倍，从而能够使得该离散RU的发送功率大于该连续RU的发送功率。
例如，对于离散26-tone RU，26个子载波中的两两相邻的子载波之间间隔3个子载波。这样一个离散26-tone RU所占的兆赫兹数为8兆赫兹。而连续26-tone RU所占的兆赫兹数为2兆赫兹。这样离散26-tone RU所占的兆赫兹数大于连续26-tone RU所占的兆赫兹数，也就能够使得离散26-tone RU的发送功率大于连续26-tone RU的发送功率。
应理解，间隔的子载波可以不分配给任何站点，也可以属于分配给另一个站点的离散RU的子载波。
在另一个例子中，离散RU的多个子载波组中，每个子载波组包括1个子载波，两两相邻的子载波组之间的间隔的子载波的数量为1。也即离散RU的N个子载波中，两两相邻的子载波之间间隔1个子载波。这样，对于包含相同数量的子载波的离散RU和连续RU，离散RU所占的兆赫兹数为连续RU所占的兆赫兹数的2倍，从而能够使得该离散RU的发送功率大于该连续RU的发送功率。
例如，离散26-tone RU的26个子载波中的两两相邻的子载波之间间隔1个子载波。这样一个离散26-tone RU所占的兆赫兹数为4兆赫兹。而连续26-tone RU所占的兆赫兹数仅有2兆赫兹。这样离散26-tone RU所占的兆赫兹数大于连续26-tone RU所占的兆赫兹数，也就能够使得离散26-tone RU的发送功率大于连续26-tone RU的发送功率。
在一些可选的实施例中，离散资源单元中的导频子载波的位置，与该导频子载波作为连续资源单元中的导频子载波时的位置相同，这里的位置相同，是在整个带宽中所处的位置相同。这样能够使得PPDU中的极高吞吐率短训练字段(extremely high throughputshort training field，EHT-STF)和EHT长训练字段(extremely high throughput long training field，EHT-LTF)序列不变，实现离散RU与连续RU混传。
下面具体提供一些离散资源单元中的导频子载波的位置，与该导频子载波作为连续资源单元中的导频子载波时的位置相同时，离散RU的子载波的分布方式。
在一种可能的实现方式中，一个离散RU包括多个子RU，每个子RU包括多个子载波组。一个子载波组包括1个子载波。一个子RU的两两相邻的子载波之间的间隔是相同的。 一个离散RU包括至少一个导频子载波。离散RU的导频子载波位置与连续RU中的导频子载波的位置相同。
例如，离散RU包括2个子RU。2个子RU中，其中一个子RU的子载波的索引为奇数，另一个子RU的子载波的索引为偶数。2个子RU中的一个子RU的任一子载波的频率高于另一个子RU的任一子载波的频率。一个离散RU包括至少一个导频子载波。离散RU的导频子载波位置与连续RU中的导频子载波在带宽中的位置相同。这样在离散RU的导频子载波位置与连续RU中的导频子载波的位置相同的前提下，保证每个离散RU都有导频子载波，能够使得PPDU中的EHT-STF/EHT-LTF序列不变，实现离散RU与连续RU混传，也能够使得站点更好地进行相位纠正。
在一些例子中，带宽为20MHz。20MHz包括可离散26-tone RU、离散52-tone RU，离散106-tone RU，离散242-tone RU中的一种或多种的组合。该20MHz，包括256个子载波，索引值为-128,…,0,…,127。20MHz时，资源单元分配信息可依据表3指示离散RU的子载波的数目以及子载波在带宽中的位置。
本申请以下表格中的中[a:m:b]&[c:m:d]表示{a,a+m,…,b-m,b}的离散序列，加上{c,c+m,…,d-m,d}的离散序列。{a,a+m,…,b-m,b}的离散序列包括子载波a,子载波a+m,…,子载波b-m,子载波b；{c,c+m,…,d-m,d}的离散序列包括子载波c,子载波c+m,…,子载波d-m,子载波d。
表3
Figure PCTCN2021104942-appb-000004
Figure PCTCN2021104942-appb-000005
表3中的每个离散RU包括2个子RU。2个子RU中，其中一个RU的子载波的索引为奇数，另一个子载波的索引为偶数。其中一个子RU的任一子载波的频率高于另一个子RU的任一子载波的频率。每个离散RU包括一个导频子载波，而且表3中的与连续RU场景下的导频子载波(例如表1中的连续RU的导频子载波)的位置是相同的。
如表3所示的例子中，离散26-tone RU包括2个子RU。一个子RU的多个子载波中，两两相邻的子载波之间间隔1个子载波，或者说，两两相邻的子载波的子载波索引之差为2。
例如，20MHz内，一个站点所被分配的离散26-tone RU可为，上述表3中26-tone RU所在的行中的DRU1-DRU4，DRU6-DRU9中的一个。DRU5包括两组连续的子载波组(子载波-16至子载波-4，以及子载波4至子载波16)，因此，DRU5实际上是连续RU。
具体的，上述表3中26-tone RU所在的行中的DRU1对应的离散26-tone RU包括：子载波-121，子载波-119，子载波-117，……，子载波-99，子载波-97，子载波-95，子载波-94，子载波-92，子载波-90，……，子载波-74，子载波-72和子载波-70。或者说，该离散26-tone RU的一个子RU包括子载波-121，子载波-119，子载波-117，……，子载波-99，子载波-97，子载波-95；该离散26-tone RU的另一个子RU离散26-tone RU的另一个子RU包括子载波-94，子载波-92，子载波-90，……，子载波-74，子载波-72，子载波-70。其中，子载波-90和子载波-76为导频子载波。
上述表3中26-tone RU所在的行中的DRU 2对应的离散26-tone RU包括：子载波-120，子载波-118，子载波-116，……，子载波-98，子载波-96，子载波-95，子载波-93，子载波-91，……，子载波-75，子载波-73和子载波-71。或者说，该离散26-tone RU的一个子RU包括子载波-120，子载波-118，子载波-116，……，子载波-98和子载波-96；该离散26-tone RU的另一个子RU包括子载波-95，子载波-93，子载波-91，……，子载波-75，子载波-73和子载波-71。其中，子载波-116和子载波-102为导频子载波。
可以看出，该26-tone RU所在的行中的DRU1的子载波之间的间隔子载波即为DRU 2的子载波，DRU2的子载波之间的间隔子载波即为DRU 2的子载波。这样，DRU1和DRU2可理解为一个离散RU组。
可选的，一个离散RU的多个子载波之间间隔的子载波也可以作为另外的一个或多个离散RU的子载波。离散RU在带宽中可以是以离散RU组的形式出现的，这样能够充分利用频域资源，充分利用一个离散RU的子载波之间间隔的子载波。其中，一个离散RU组包括多个离散RU。离散RU组中的任意一个离散RU的多个子载波之间的间隔子载波，为该离散RU组中的另外的至少一个离散RU的子载波。
上述表3中26-tone RU所在的行中的DRU3-DRU4和DRU6-DRU9对应的离散26-tone RU的子载波范围请参考表3，此处不再一一说明。DRU3和DRU4为一个离散RU组，DRU6和DRU7为一个离散RU组，DRU8和DRU9为一个离散RU组。
上述表3中，一个离散RU的2个子RU中，可能有一个子RU不包括导频子载波。站点在进行相位估计时，可将该站点可将所有离散RU的导频子载波统一起来联合做相位纠正。
带宽为20MHz时，一个站点所被分配的离散52-tone RU可为，上述表3中52-tone RU所在的行中的DRU1-DRU4中的一个。具体的，上述表3中52-tone RU所在的行中的DRU1对应的离散52-tone RU包括：子载波-121，子载波-119，子载波-117，……，子载波-67，子载波-69，子载波-71，子载波-68，子载波-70，子载波-72，……，子载波-20，子载波-18和子载波-16。或者说，该离散52-tone RU的一个子RU包括子载波-121，子载波-119，子载波-117，……，子载波-67，子载波-69和子载波-71；该离散52-tone RU的另一个子RU包括子载波-68，子载波-70，子载波-72，……，子载波-20，子载波-18和子载波-16。其中，子载波-62，子载波-48，子载波-32和子载波-22为导频子载波。
上述表3中52-tone RU所在的行中的DRU2对应的离散52-tone RU包括：子载波-120，子载波-118，子载波-116，……，子载波-74，子载波-72，子载波-70，子载波-69，子载波-67，子载波-65，……，子载波-21，子载波-19和子载波-17。或者说，该离散52-tone RU的一个子RU包括子载波-120，子载波-118，子载波-116，……，子载波-74，子载波-72和子载波-70；该离散52-tone RU的另一个子RU包括子载波-69，子载波-67，子载波-65，……，子载波-21，子载波-19和子载波-17。其中，子载波-116，子载波-102，子载波-90和子载波-76为导频子载波。
可以看出，该52-tone RU所在的行中的DRU1的子载波之间间隔的子载波为DRU2的子载波，该DRU1和该DRU2可理解为一个离散RU组。
上述表3中52-tone RU所在的行中的DRU3和DRU4对应的离散52-tone RU的子载波范围请参考表3，此处不再一一说明。DRU3和DRU4可理解为一个离散RU组。
带宽为20MHz时，一个站点所被分配的离散106-tone RU可为，上述表3中106-tone RU所在的行中的DRU1或DRU2。DRU1和DRU2可理解为一个离散RU组。
上述表3中106-tone RU所在的行中的DRU1对应的离散106-tone RU包括：子载波-122，子载波-120，子载波-118，……，子载波-22，子载波-20，子载波-18，子载波17，子载波19，子载波21，……，子载波117，子载波119和子载波121。或者说，该离散106-tone RU的一个子RU包括子载波-122，子载波-120，子载波-118，……，子载波-22，子载波-20和子载波-18；该离散106-tone RU的另一个子RU包括子载波17，子载波19，子载波21，……，子载波117，子载波119和子载波121。其中，其子载波-116，子载波-90，子载波-48和子载波-22为导频子载波。
上述表3中106-tone RU所在的行中的DRU1对应的散106-tone RU包括：子载波-121，子载波-119，子载波-117，……，子载波-21，子载波-19，子载波-17，子载波18，子载波20，子载波22，……，子载波118，子载波120，子载波122。或者说，该离散106-tone RU的一个子RU包括子载波-121，子载波-119，子载波-117，……，子载波-21，子载波-19， 子载波-17；该离散106-tone RU的另一个子RU包括子载波18，子载波20，子载波22，……，子载波118，子载波120，子载波122。其中，子载波-22，子载波-48，子载波-90和子载波-116为导频子载波。
应理解，本申请表3中的各个DRU的子载波范围仅用于举例说明，本申请并不限定各个DRU的子载波范围。上述离散RU组是与每个DRU的子载波范围有关的，一个DRU的子载波范围变化时，与该DRU为一个离散RU组的DRU也会变化。本申请也不局限于带宽上的离散RU分组为上述举例的分组。
例如，在其他例子中，26-tone RU所在的行中的DRU1的子载波范围也可以为子载波-121至子载波-93之间的奇数子载波和子载波18至子载波42之间的偶数子载波，26-tone RU所在的行中的DRU6的子载波范围可以为子载波17至子载波41之间的奇数子载波和子载波-120至子载波-96之间的偶数子载波。这样，该DRU1与该DRU6为一个离散RU组。
类似的，子载波的数量大于26的离散RU对应的离散RU组的搭配也不是固定的。
本申请中，奇数子载波指索引为奇数的子载波，偶数子载波指索引为偶数的子载波。子载波A至子载波B之间的奇数子载波包括索引大于或等于A且小于或等于B的奇数子载波。子载波X至子载波Y之间的偶数子载波包括索引大于或等于X且小于或等于Y的偶数子载波。
上述表3中242-tone RU所在的行中的DRU1的子载波包括子载波-122，子载波-121，子载波-120，…，子载波-4，子载波-3，子载波-2，子载波2，子载波3，子载波4…，子载波120，子载波121和子载波122。或者说，离散242-tone RU的一个子RU包括子载波-122，子载波-121，子载波-120，…，子载波-4，子载波-3，子载波-2；离散242-tone RU的另一个子RU包括子载波2，子载波3，子载波4…，子载波120，子载波121和子载波122。其中，子载波-116，子载波-90，子载波-48，子载波-22，子载波22，子载波48，子载波90和子载波116为导频子载波。可以看出，该DRU1包括2个子载波组，每个子载波组包括121个连续的子载波。该242-tone RU所在的行中的DRU1是特殊的连续RU，而不是离散RU。
在另一些例子中，带宽大于或等于40MHz，离散RU分布在大于或等于40MHz的频率范围内，离散RU的每个子RU可位于不同的20MHz上。
在一些具体的例子中，带宽上的离散26-tone RU可包括2个子RU，每个子RU包括13个子载波。每个子RU位于不同的20MHz上。每个子RU中的两两相邻的子载波之间间隔的子载波的数量为1个子载波，2个子载波，3个子载波等。例如，如图6A所示的资源单元分配示意图，带宽为80MHz，离散26-tone RU的2个子RU(如图6A中的26子RU1和26子RU2)分别位于第1个20MHz和第2个20MHz，每个子RU中的两两相邻的子载波之间间隔的子载波的数量为1个子载波。如图6B所示的资源单元分配示意图，带宽为80MHz，离散26-tone RU的4个子RU(如图6B中的26子RU1、26子RU2、26子RU3和26子RU4)分别位于第1个20MHz、第2个20MHz、第3个20MHz和第4个20MHz，离散RU的每个子RU中的两两相邻的子载波之间间隔的子载波的数量为3个子载波。
在另一些具体的例子中，带宽大于或等于80MHz。按照频率由低至高的顺序，在带宽 的一个80MHz中，包括4个20MHz。该80MHz内的离散52-tone RU包括4个子RU，每个子RU包括13个子载波。每个子RU位于不同的20MHz上。也即，该离散52-tone RU的4个子RU，分布在4个20MHz上。每个子RU中的两两相邻的子载波之间间隔的子载波的数量为1个子载波，2个子载波，3个子载波等。例如，如图6C所示的资源单元分配示意图，带宽为80MHz，离散52-tone RU的4个子RU(如图6C所示的52子RU1、52子RU2、52子RU3和52子RU4)分别位于4个20MHz上。离散52-tone RU的每个子RU中的两两相邻的子载波之间间隔的子载波的数量为3个子载波。
在又一些具体的例子中，带宽大于或等于80MHz。按照频率由低至高的顺序，在带宽的一个80MHz中，包括4个20MHz。该80MHz内的离散106-tone RU，包括4个子RU，其中2个子RU中的每个子RU包括27个子载波，另外2个子RU中的每个子RU包括26个子载波。每个子RU位于不同的20MHz上。也即，该离散56-tone RU的4个子RU，分布在4个20MHz上。每个子RU中的两两相邻的子载波之间间隔的子载波的数量为1个子载波，2个子载波，3个子载波等。例如，如图6D所示的资源单元分配示意图，带宽为80MHz，离散106-tone RU的4个子RU(如图6D中的106子RU1、106子RU2、106子RU3和106子RU4)分别位于第1个20MHz、第2个20MHz、第3个20MHz和第4个20MHz，离散106-toneRU的每个子RU中的两两相邻的子载波之间间隔的子载波的数量为3个子载波。
在再另一些具体的例子中，带宽大于或等于80MHz。按照频率由低至高的顺序，在带宽的一个80MHz中，包括至少4个20MHz。该80MHz内的离散242-tone RU包括4个子RU，其中2个子RU中的每个子RU包括61个子载波，另外2个子RU中的每个子RU包括60个子载波。每个子RU位于不同的20MHz上。也即，该离散56-tone RU的4个子RU，分布在4个20MHz上。每个子RU中的两两相邻的子载波之间间隔的子载波的数量为1个子载波，2个子载波，3个子载波等。例如，如图6E所示的资源单元分配示意图，带宽为80MHz，离散242-tone RU的4个子RU(如图6E中的242子RU1、242子RU2、242子RU3和242子RU 4)分别位于第1个20MHz、第2个20MHz、第3个20MHz和第4个20MHz，离散242-tone RU的每个子RU中的两两相邻的子载波之间间隔的子载波的数量为3个子载波。
对于子载波的数量大于242的离散RU，也可以包括多个子RU，多个子RU中的每个RU分布在不同的20MHz，每个子RU中的子载波是离散的，或者说是不连续的，本申请实施例中不一一列举。
本申请中，并不限定各个离散RU包括的子RU的数量为上述举例的数量。
在又一些可能的实现方式中，一个离散RU包括多个子RU，每个子RU包括2个子载波子组，每个子载波子组包括多个子载波。一个子RU所包括的2个子载波子组中，一个子载波子组中的子载波的索引为奇数，另一个子载波子组中的子载波的索引为偶数。可以理解，一个子载波子组的多个子载波中，两两相邻的子载波之间间隔1个子载波。多个子RU中的每个子RU包括至少一个导频子载波。这样导频子载波分布平均，有助于提升相位纠正的准确性。
例如，带宽为20MHz时，资源单元分配信息依据表4指示离散RU的子载波的数目以 及子载波在带宽中的位置。
表4
Figure PCTCN2021104942-appb-000006
表4中符合上述离散RU组的条件的至少2个RU的组合可理解为一个RU组。此处不再详述。
带宽为20MHz时，一个站点被分配的26-tone RU，可以为表4中的26-tone RU所在的行中的DRU1-DRU4，DRU6-DRU9中一个。
带宽为20MHz时，表4中的26-tone RU所在的行中的DRU1对应的离散26-tone RU包括2个子RU。其中一个子RU包括子载波-121至-109之间的奇数子载波，以及子载波-106 至子载波-96之间的偶数子载波；其中，子载波-102的导频子载波。另一个子RU包括子载波-95至子载波-83之间的偶数子载波，以及子载波-80至子载波-70之间的奇数子载波；其中，子载波-76为导频子载波。这样该离散26-tone RU的每个子RU中，均包括至少一个导频子载波。
带宽为20MHz时，表4中的26-tone RU所在的行中的DRU2-DRU4，DRU6-DRU9对应的离散26-tone RU的子载波范围以及导频子载波的位置请参阅表4，此处不再一一说明。
20MHz内，一个站点被分配的52-tone RU，可以为表4中的52-tone RU所在的行中的DRU1-DRU4中的一个或多个。
带宽为20MHz时，表4中的52-tone RU所在的行中的DRU1对应的离散52-tone RU包括2个子RU。其中一个子RU包括子载波-121至子载波-95之间的奇数子载波，以及子载波-92至子载波70之间的偶数子载波；其中子载波-90和子载波-76为导频子载波。另一个子RU包括子载波-67至子载波-41之间的奇数子载波，以及子载波-40至子载波-18之间的偶数子载波；其中，子载波-36和子载波-22为导频子载波。这样该离散52-tone RU的每个子RU中，均包括至少一个导频子载波。
带宽为20MHz时，表4中的52-tone RU所在的行中的DRU2-DRU4对应的离散52-tone RU的子载波范围以及导频子载波的位置具体请参阅表4，此处不再一一说明。
带宽为20MHz时，一个站点被分配的106-tone RU可以为表4中106-tone RU所在的行中的RU1或RU2。
该RU1包括2个子RU，该2个子RU中的一个子RU包括2个子载波子组，其中一个子载波子组包括子载波-122至子载波-68之间的偶数子载波；另一个子载波子组包括子载波-67至子载波-17之间的奇数子载波。该一个子RU中的子载波-116，子载波-90为导频子载波。该RU1的另一个子RU包括2个子载波子组，其中一个子载波子包括子载波17至子载波69之间的奇数子载波；另一个子载波子组包括子载波72至子载波122之间的偶数子载波。该另一个子RU中的子载波90，子载波116为导频子载波。这样该离散106-tone RU的每个子RU中，均包括至少一个导频子载波。
类似的，表4中106-tone RU所在的行中的RU2包括2个子RU，其中一个子RU包括2个子载波子组，每个子RU包括2个子载波子组。每个子RU所包括的2个子载波子组中，一个子载波子组中的子载波的索引为奇数，另一个子载波子组中的子载波的索引为偶数。每个子RU包括至少1个导频子载波。
20MHz内的242-tone RU为连续RU。也即，表4中的242-tone RU所在的行中的DRU1位连续RU。
在另一些可能的实现方式中，一个离散RU包括多个子RU，每个子RU包括2个子载波子组，每个子载波子组包括多个子载波。一个子RU所包括的2个子载波子组中，一个子载波子组中的子载波的索引为奇数，另一个子载波子组中的子载波的索引为偶数。带宽大于或等于40MHz，多个子RU中的每个子RU位于不同的20MHz中。
具体的，带宽大于或等于40MHz时，离散RU可分布在40MHz内。该40MHz包括512个子载波。该512个子载波的索引范围为-256，-255，-254，……，0，……，253，254， 255。其中，40MHz中的第1个20MHz包括子载波-256，子载波-255，子载波-254，……，子载波-3，子载波-2和子载波-1；子载波0，40MHz中的第2个20MHz包括子载波1，子载波2，……，子载波253，子载波254和子载波255。
表5示出了带宽为40MHz时，可能分布的离散RU的RU索引、离散RU的子载波范围，以及导频子载波的位置。资源单元分配信息可依据表5指示各个离散RU的子载波的数目以及子载波在带宽中的位置。
表5
Figure PCTCN2021104942-appb-000007
Figure PCTCN2021104942-appb-000008
表5中符合上述离散RU组的条件的至少2个RU的组合可理解为一个RU组。此处不再详述。
带宽为40MHz时，一个站点所被分配的离散26-tone RU可以为，表5中的26-tone RU所在的行中的DRU1-DRU18中的一个。
具体的，表5中的26-tone RU所在的行中的DRU1包括2个子RU，该DRU1的一个子RU包括子载波-243至子载波-231之间的奇数子载波，以及子载波-228至子载波-218之间的偶数子载波。该DRU1中的子载波-224为导频子载波。可以看出该DRU1的一个子 RU位于该40MHz中的第1个20MHz。
该DRU1的另一个子RU包括子载波4至子载波16之间的偶数子载波，以及子载波19至子载波29之间的奇数子载波。该另一个子RU中的子载波10为导频子载波。可以看出该DRU1的另一个子RU位于该40MHz中的第2个20MHz。
表5中的26-tone RU所在的行中的DRU2包括2个子RU，该DRU2的一个子RU包括子载波-217至子载波-205之间的奇数子载波和子载波-174个子载波-164之间的偶数子载波。该DRU中的子载波-170为导频子载波。该DRU2的一个子RU位于该40MHz中的第1个20MHz。
该DRU2的另一个子RU包括子载波30-子载波42之间的偶数子载波，以及子载波45至子载波55之间的奇数子载波。该DRU2的另一个子RU的子载波36位导频子载波。该DRU2的另一个子RU位于该40MHz中的第2个20MHz。
类似的，表5中的其他离散26-tone RU(26-tone RU所在的行中的RU3-RU18)中的每个离散26-tone RU均包括2个子RU，其中一个子RU位于40MHz的第1个20MHz，另一个子RU位于该40MHz中的第2个20MHz。每个子RU均包括2个子载波子组，其中的一个子载波子组中的子载波的索引为奇数，另一个子载波子组中的子载波的索引为偶数。2个子RU中的每个子RU均包括至少一个导频子载波。
带宽为40MHz时，一个站点所被分配的离散52-tone RU可以为，表5中的52-tone RU所在的行中的DRU1-DRU8中的一个。
表5中的52-tone RU所在的行中的DRU1包括2个子RU。该DRU1的一个子RU包括子载波-243至子载波-217中的奇数子载波，以及子载波-214至子载波-192之间的偶数子载波。DRU1的一个子RU的子载波-212和子载波-198为导频子载波。该DRU1的一个子RU位于40MHz中的第1个20MHz。
该DRU1的另一个子RU包括子载波-4至子载波30之间的偶数子载波，以及子载波33至子载波55之间的奇数子载波。该DRU1的另一个子RU的子载波20和子载波24位导频子载波。该DRU1的另一个子RU位于40MHz中的第2个20MHz。
类似的，表5中的其他离散52-tone RU(52-tone RU所在的行中的DRU2-DRU8)中的每个离散52-tone RU均包括2个子RU，其中一个子RU位于40MHz的第1个20MHz，另一个子RU位于该40MHz中的第2个20MHz。每个子RU均包括2个子载波子组，其中的一个子载波子组中的子载波的索引为奇数，另一个子载波子组中的子载波的索引为偶数。2个子RU中的每个子RU均包括至少一个导频子载波。
带宽为40MHz时，一个站点所被分配的离散106-tone RU可以为，表5中的106-tone RU所在的行中的DRU1-DRU4中的一个。
表5中的106-tone RU所在的行中的RU1包括2个子RU。该RU1的一个子RU包括子载波-243至子载波-191之间的奇数子载波，以及子载波-188至子载波-138之间的偶数子载波。该RU1的一个子RU的子载波-170和子载波-144为导频子载波。该RU1的一个子RU位于该40MHz的第1个20MHz。
该RU1的另一个子RU包括子载波4至子载波56之间的偶数子载波，以及子载波59子子载波109之间的奇数子载波。该该RU1的另一个子RU的子载波1-和子载波36为导 频子载波。该RU1的另一个子RU位于该40MHz的第2个20MHz。
类似的，表5中的其他离散106-tone RU(106-tone RU所在的行中的DRU2-DRU4)中的每个离散106-tone RU均包括2个子RU，其中一个子RU位于40MHz的第1个20MHz，另一个子RU位于该40MHz中的第2个20MHz。每个子RU均包括2个子载波子组，其中的一个子载波子组中的子载波的索引为奇数，另一个子载波子组中的子载波的索引为偶数。2个子RU中的每个子RU均包括至少一个导频子载波。
带宽为40MHz时，一个站点所被分配的离散242-tone RU可以为，表5中的242-tone RU所在的行中的DRU1或DRU2。
如表5所示，242-tone RU所在的行中的DRU1包括2个子RU。该DRU1的一个子RU包括子载波-244至子载波-124之间的偶数子载波，以及子载波-121至子载波-3之间的奇数子载波。该DRU1的一个子RU中的子载波-238，子载波-212，子载波-170和子载波-144为导频子载波。该DRU1的一个子RU位于该40MHz的第1个20MHz。
该DRU1的另一个子RU包括子载波3至子载波123之间的奇数子载波，以及子载波126至子载波244之间的偶数子载波。该DRU1的另一个子RU的子载波144，子载波170，子载波212和子载波238为导频子载波。该DRU1的另一个子RU位于该40MHz的第2个20MHz。
类似的，表5中的242-tone RU所在的行中的DRU2也包括2个子RU，其中一个子RU位于40MHz的第1个20MHz，另一个子RU位于该40MHz中的第2个20MHz。每个子RU均包括2个子载波子组，其中的一个子载波子组中的子载波的索引为奇数，另一个子载波子组中的子载波的索引为偶数。2个子RU中的每个子RU均包括至少一个导频子载波。
按照类似的原理，带宽大于或等于80MHz时，一个站点被分配的离散RU可包括4个子RU。4个子RU分别位于80MHz的4个20MHz。每个子RU包括2个子载波子组，其中的一个子载波子组中的子载波的索引为奇数，另一个子载波子组中的子载波的索引为偶数。4个子RU中的每个子RU包括至少一个导频子载波。
带宽大于或等于160MHz时，一个站点被分配的离散RU可包括8个子RU。8个子RU分别位于160MHz的8个20MHz。每个子RU包括2个子载波子组，其中的一个子载波子组中的子载波的索引为奇数，另一个子载波子组中的子载波的索引为偶数。8个子RU中的每个子RU包括至少一个导频子载波。
带宽大于或等于320MHz时，一个站点被分配的离散RU可包括16个子RU。16个子RU分别位于320MHz的16个20MHz。每个子RU包括2个子载波子组，其中的一个子载波子组中的子载波的索引为奇数，另一个子载波子组中的子载波的索引为偶数。16个子RU中的每个子RU包括至少一个导频子载波。
在再又一种可能的实现方式中，带宽大于或等于40MHz，离散RU包括多个子载波组。一个子载波组包括连续的多个子载波。多个子载波组中的任意一个子载波组中的连续的子载波的数量小于13。多个子载波组分别位于不同的20MHz。
例如，离散RU为离散26-tone RU。离散26-tone RU分为4个子载波组，其中第1-7 个子载波为一个子载波组，第8-14个子载波为一个子载波组，第15-20个子载波为一个子载波组，第21-26个子载波为一个子载波组。4个子载波组分别位于不同的20MHz。例如离散26-tone RU的第1-7个子载波位于80MHz中的第1个20MHz，第8-14个子载波位于80MHz中的第2个20MHz，第15-20个子载波位于80MHz中的第3个20MHz，第21-26个子载波位于80MHz中的第4个20MHz。
又例如，离散RU为52-tone RU。52-tone RU可包括8个子载波组，分别位于不同的20MHz。对于子载波的数量大于52的离散RU，也可以包括多个子载波组，多个子载波组中的每个子载波组分别位于不同的20MHz。
本申请不限定离散RU包括的子载波组的数量为上述举例中的数量。
在再另一种可能的实现方式中，带宽大于或等于40MHz，离散RU包括多个子RU，每个子RU包括多个子载波组，每个子载波组包括连续的多个子载波。任意一个子载波组中的连续的子载波的数量小于13。多个子RU分别位于不同的20MHz。
例如，带宽大于或等于80MHz。离散RU为52-tone RU。52-tone RU包括4个子RU，每个子RU包括2个子载波组，4个子RU分别位于不同的20MHz。
更具体的，带宽中的一个20MHz包括一个子RU，该子RU包括2个子载波组，其中一个子载波组包括52-tone RU的第1-7个子载波，另一个子载波组包括52-tone RU的第8-14个子载波，该第7个子载波与该第8个子载波是不连续的。
带宽中的另一个20MHz包括另一个子RU，该子RU包括2个子载波组，其中一个子载波组包括52-tone RU的第15-21个子载波，另一个子载波组包括52-tone RU的第22-28个子载波，该第21个子载波与该第22个子载波是不连续的。
带宽中的又一个20MHz包括又一个子RU，该子RU包括2个子载波组，其中一个子载波组包括52-tone RU的第29-34个子载波，另一个子载波组包括52-tone RU的第35-40个子载波，该第34个子载波与该第35个子载波是不连续的。
带宽中的再一个20MHz包括再一个子RU，该子RU包括2个子载波组，其中一个子载波组包括52-tone RU的第1-7个子载波，另一个子载波组包括52-tone RU的第8-15个子载波，该第7个子载波与该第8个子载波是不连续的。
类似的，离散RU为106-tone RU，离散106-tone RU也可以包括4个子RU，分别位于不同的20MHz。该4个子RU中的每个子RU可包括4个子载波组，每个子载波组包括多个连续的子载波。每个子RU的4个子载波组中，属于不同的子载波组的任意2个子载波不连续。
离散RU为242-tone RU，242-tone RU也可以包括4个子RU，分别位于不同的20MHz。该4个子RU中的每个子RU可包括8个子载波组，每个子载波组包括多个连续的子载波。每个子RU的8个子载波组中，属于不同的子载波组的任意2个子载波不连续。
对于子载波的数量大于242的离散RU，也可以包括多个子载波组，多个子载波组中的每个子载波组分别位于不同的20MHz。每个子载波组中包括的连续的子载波的数量小于13。
本申请不限定离散RU包括的子RU的数量以及子RU包括的子载波组的数量为上述举 例中的数量。
应理解，上述关于离散RU的子载波范围以及导频子载波的位置的多种可能的实现方式中，仅针对带宽为20MHz和带宽为40MHz提供了具体的离散RU的子载波范围的举例(表4-表6)，本申请实施例上述关于离散RU的子载波范围以及导频子载波的位置的多种可能的实现方式并不仅限于用于带宽为20MHz和带宽为40MHz的场景，也可以用于带宽大于或等于40MHz的场景，例如也可以用于带宽为80MHz、带宽为160MHz、带宽为320MHz的场景。
本申请实施例中，一个离散RU可以与另一个离散RU组成离散多RU(multi-RU，MRU)，一个离散RU也可以与一个连续RU组成离散MRU。该离散MRU能够被分配给一个或多个站点。也即是说，分配给一个站点的一个或多个RU中，可包括离散多RU。离散多RU中的离散RU可以为上述任一实施例中涉及的离散RU。
例如，如图7所示的资源单元分配示意图，带宽大于或等于80MHz时，带宽包括离散484+242-tone RU。该离散484+242-tone RU包括离散242-tone RU和离散484-tone RU。
该484可包括2个子RU(如图7中的484子RU1和484子RU2)，每个子RU分别位于80MHz中的一个40MHz。该242-tone RU也可以包括4个子RU(如图7中的242子RU1、242子RU2，242子RU3和242子RU4)，分别位于80MHz中的一个20MHz。
又例如，带宽可包括离散52+26-tone RU，该离散52+26-tone RU包括离散52-tone RU和离散26-tone RU，离散52-tone RU和离散26-tone RU的子载波的分布方式可以为上述实施例中提供的离散RU的子载波的分布方式中的一种。
带宽中的离散106+52-tone RU包括离散106-tone RU和离散52-tone RU，离散106-tone RU和离散52-tone RU的子载波的分布方式可以为上述实施例中提供的离散RU的子载波的分布方式中的一种。
类似的，对于其他尺寸的离散多RU，离散多RU中的离散RU的子载波的分布方式也可以为上述实施例中提供的离散RU的子载波的分布方式中的一种。
本申请实施例中子载波的数量大于或等于242的离散RU可被分配给多个用户，以支持多个用户进行多用户多输入多输出(multiple user multiple input multiple output，MU-MIMO)传输。
基于上述的一些离散RU的子载波的分布方式，介绍资源单元分配信息的指示方式。
在一种可能的实现方式中，资源单元分配信息指示离散RU的大小以及离散RU的索引。例如，表3至表5中，相同大小的每个离散RU的索引(DRU X)，对应一个离散RU的子载波范围，以及该离散RU的导频子载波。这样资源单元分配信息可通过指示离散资源单元的索引，实现间接指示离散RU的子载波范围，以及该离散RU的导频子载波。
具体地，在下行多用户传输的场景下，步骤501可通过接入点向站点发送PPDU来实现。PPDU包括公共字段和用户特定字段的资源单元分配子字段包括该资源单元分配指示信息，PPDU的用户特定字段的用户字段包括站点信息。资源单元分配子载波包括指示资源单元分配的索引，指示资源单元分配的索引指示一个粒度的频域范围内的RU分布情况 以及用户特定字段中该频域范围内的每个RU对应的用户字段的数目。该一个粒度的频域范围例如可以是但不限于20MHz。
例如，资源单元分配子字段按照指示资源单元分配的索引与RU的分布情况的对应关系，通过资源单元分配的索引指示20MHz内的按照顺序分布的一个或多个连续RU。在一个具体的例子中，如表6所示，资源单元分配子字段可采用表6中的索引指示20MHz内分布的连续RU。表6中的索引与RU的分布情况的对应关系仅用于举例说明，本申请并不限定资源单元分配子字段需采用表6中的索引指示资源单元的分配情况。
表6
Figure PCTCN2021104942-appb-000009
表6中的第1列为指示资源单元分配的索引。每个索引所在的行中的RU为该索引对应RU的分布情况。
站点可根据资源单元分配子字段的索引确定带宽上的资源单元的分配次序以及每个资源单元的尺寸(子载波数量)，站点可以根据用于不同尺寸的RU在带宽中的出现的次序，确定RU与子载波的对应关系。某一尺寸的RU在带宽中各个可能的次序位置出现时，RU 与子载波的对应关系是标准规定的。
上述举例的表1和表2可用于规定连续RU与子载波的对应关系，表3-表5可用于规定离散RU及特殊的连续RU与子载波的对应关系。也可以说，表1和表2可用于规定连续RU对应的子载波范围，以及RU的导频子载波在带宽中的位置。表3-表5可用于规定离散RU以及特殊的连续RU对应的子载波范围，以及RU的导频子载波在带宽中的位置。可以看出，离散RU与子载波的对应关系和连续RU与子载波的对应关系是不同的。AP可以通过向STA发送RU类型指示信息的方式，通知RU的类型。AP也可以在发送资源调度信息之前，与STA协商RU的类型。
例如，带宽为20MHz，在20MHz的带宽内的RU均为连续RU时，站点在根据接入点发送的RU类型指示信息确定带宽上的RU均为连续RU，或者在接收资源单元分配子字段之前，站点和接入点协商了带宽上的RU均为连续RU。若资源单元分配子字段为索引00000010，站点可以确定该20MHz包括的RU依次包括7个26-toneRU以及一个52-tone RU。站点可以根据该索引指示的RU的分布情况，确定7个26-tone RU分别与表1中26-tone RU所在的行中的RU 1-RU7一一对应，52-tone RU与表1中的52-tone RU所在的行中的RU4对应。站点可根据用于规定连续RU与子载波的对应关系的表1中，26-tone RU所在的行中的RU 1-RU7确定该7个26-tone RU中的每个26-tone RU对应的子载波范围以及导频子载波在带宽中的位置，以及根据表1中的52-tone RU所在的行中的RU4确定该20MHz上的52-tone RU的子载波范围以及导频子载波在带宽中的位置。
一个指示资源单元分配的索引指示对应的一个粒度的频域范围内的均为RU小于或等于242个子载波的RU时，每个RU对应一个用户特定字段中的一个用户字段。用户特定字段中的用户字段排列的顺序与对应的资源单元分配子字段所指示的资源单元的顺序一致。例如，资源单元分配子字段为索引00000010，与该资源单元分配子字段对应的用户字段中，第1-7个用户字段对应的站点，被分配给1-7个26-tone RU；第8个用户字段对应的站点被分配给52-tone RU。
一个指示资源单元分配的索引指示对应的一个粒度的频域范围内的RU为大于或等于242个子载波的RU时，该指示资源单元分配的索引还用于指示该RU在资源单元分配子字段所在的内容信道中的用户特定字段中贡献的用户字段的数目，或者说，还用于指示该RU对应的用户字段的数目。
又例如，带宽为20MHz，该20MHz依次包括2个离散52-tone RU、1个特殊的连续26-tone RU和2个离散52-tone RU。站点在根据接入点发送的RU类型指示信息确定带宽上的RU均为离散RU或带宽上仅包括离散RU和特殊的连续RU，或者在接收资源单元分配子字段之前，站点和接入点协商了带宽上的RU均为连续RU或带宽上仅包括离散RU和特殊的连续RU。
该20MHz对应的资源单元分配子字段可为上述表6中的索引00001111。站点可根据该索引00001111，确定该20MHz依次包括2个离散52-tone RU、1个26-tone RU和2个离散52-tone RU。离散RU在带宽上是成组出现的，该索引00001111指示的RU仅包括一个 26-tone RU，则站点可以识别出该1个26-tone RU是连续26-tone RU。或者，该1个26-tone RU对应的用户字段指示该1个26-tone RU为连续26-tone RU，站点也能够识别出该1个26-tone RU是连续26-tone RU。按序排列的这4个离散52-tone RU，可分别与表4中，52-toneRU所在的行中的DRU1-DRU4一一对应，该连续26-tone RU可与表4中，26-tone RU所在的行中的DRU5对应，该26-tone RU为特殊的连续26-tone RU。这样站点能够根据用于规定离散RU与子载波的对应关系的表4中，52-toneRU所在的行中的DRU1-DRU4确定该4个离散52-tone RU中的每个离散52-tone RU的子载波范围，以及每个离散52-tone RU的导频子载波在带宽中的位置。站点还能够根据表4中，26-tone RU所在的行中的DRU5确定该连续26-tone RU的子载波范围，以及该连续26-tone RU的导频子载波在带宽中的位置。
在离散RU的场景下，用户特定字段中的用户字段排列的顺序与对应的资源单元分配子字段所指示的资源单元的顺序一致。例如，基于上述资源单元分配子字段指示对应的20MHz依次包括2个离散52-tone RU、1个连续26-tone RU和2个离散52-tone RU的举例，第1个离散52-tone RU(52-tone RU所在的行中的DRU1对应的子载波范围)被分配给第1个用户字段对应的站点，第2个离散52-tone RU(52-tone RU所在的行中的DRU2对应的子载波范围)被分配给第2个用户字段对应的站点，连续26-tone RU(26-tone RU所在的行中的DRU5对应的子载波范围)被分配给第3个用户字段对应的站点，第3个52-tone RU(52-tone RU所在的行中的DRU3对应的子载波范围)被分配给第4个用户字段对应的站点，第4个52-tone RU(52-tone RU所在的行中的DRU4对应的子载波范围)被分配给第5个用户字段对应的站点。
在上行多用户传输的场景下，步骤501可通过接入点向站点发送触发帧来实现。触发帧中的用户字段的资源单元分配子字段包括该资源单元分配指示信息，用户字段的关联标识(association identification,AID)子字段包括站点信息。AID子字段用于指示该用户字段对应的站点。
每个用户字段中的资源单元分配子字段指示该用户字段对应的站点被分配的RU(离散RU或连续RU)的大小以及该站点被分配的RU在带宽中的位置。站点能够根据用户字段中的资源单元分配子字段，确定自己被分配的RU的尺寸以及该RU在带宽中的位置，从而能够根据RU在带宽中的位置以及该RU的尺寸，确定该RU对应的子载波范围，以及该RU的导频子子载波在带宽中的位置。
可以看出，本申请中，对资源单元分配子字段指示连续RU和离散RU的指示方式不做区分，在带宽仅包括连续RU，或带宽仅包括离RU，或带宽仅包括离散RU和特殊的连续RU时，资源单元分配子字段的指示方式是相同的。资源单元分配子字段指示RU的尺寸以及RU出现的次序位置。站点可根据RU的尺寸以及RU出现的次序位置，结合标准规定的离散RU与子载波的对应关系，确定被分配的离散RU的子载波的范围，也可结合标准规定的连续RU与子载波的对应关系，确定被分配的连续RU的子载波范围。
在另一种可能的实现方式中，资源单元分配信息用于指示离散资源单元中，起始子载 波组中第一个子载波的索引，子载波组中包括的子载波的数量，子载波组间隔；或者，该资源单元分配信息用于指示离散资源单元中，起始子载波组中最后一个子载波的索引，子载波组中包括的子载波的数量，子载波组间隔；或者，所述资源单元分配信息用于指示离散资源单元中，结束子载波组中第一个子载波的索引，子载波组中包括的子载波的数量，子载波组间隔；或者，该资源单元分配信息用于指示离散资源单元中，结束子载波组中最后一个子载波的索引，子载波组中包括的子载波的数量，子载波组间隔。
其中，起始子载波组为离散单元的最低频率的子载波组，结束子载波组为离散单元的最高频率的子载波组。
该子载波组间隔用于指示两两相邻子载波组之间间隔的子载波的数量。该两两相邻子载波组之间间隔的子载波的数量为，两两相邻子载波组之间间隔的属于其他资源单元的子载波的数量，保护子载波、空子载波和直流子载波的数量不包括在内。
子载波组间隔可以指示前后两个子载波组的第1个子载波之间间隔的子载波的数量，或者指示前后两个子载波组的第1个子载波的索引之差。
子载波组间隔也可以指示前后两个子载波组的最后1个子载波之间间隔的子载波的数量或者指示前后两个子载波组的最后1个子载波的索引之差。
子载波组间隔也可以指示前后两个子载波组的中间位置的子载波之间间隔的子载波的数量，或者指示前后两个子载波组的最中间位置的子载波的索引之差。
子载波组间隔还可以指示前一个子载波组的最后1个子载波与下一个子载波组的第1个子载波之间间隔的子载波的数量，或者指示前一个子载波组的最后1个子载波的索引与下一个子载波组的第1个子载波的索引之差。
这样站点能够根据资源单元分配信息指示的离散RU的起始子载波组中第一个子载波的索引，子载波组中包括的子载波的数量，子载波组间隔确定离散RU的子载波数量，以及每个子载波在带宽中的位置。或者，站点能够根据资源单元分配信息指示的离散RU的起始子载波组中最后一个子载波的索引，子载波组中包括的子载波的数量，子载波组间隔，确定离散RU的子载波数量，以及每个子载波在带宽中的位置。
具体的，离散资源单元包括的多个离散的子载波组中，两两相邻子载波组之间的子载波间隔相同时，资源单元分配信息可指示分配个一个站点的离散RU的子载波组的数量、该离散RU中，起始子载波组中的第1个子载波的索引和子载波间隔；或者资源单元分配信息可指示分配个一个站点的离散RU的子载波的数量、该离散RU中，结束子载波组中的最后一个子载波的索引和子载波组间隔。
在一些实施例中，资源单元分配信息可指示分配个一个站点的离散RU的子载波的数量、该离散RU中，起始子载波的索引和子载波间隔；或者资源单元分配信息可指示分配个一个站点的离散RU的子载波的数量、该离散RU中，结束子载波的索引和子载波间隔；或所述资源单元分配信息用于指示所述离散资源单元中，起始子载波的索引、结束子载波的索引和子载波间隔。
其中，子载波间隔用于指示所述离散资源单元中，两两相邻子载波之间间隔的属于其他资源单元的子载波的数量，或者指示两两相邻子载波的索引之差。
例如，带宽为20MHz，包括离散26-tone RU，该离散26-tone RU的26个子载波中的 两两相邻的子载波之间间隔3个子载波，该离散26-tone RU的最低频率的子载波为子载波-121。资源单元分配信息可指示离散RU的子载波的数量为26，起始子载波的索引为-121，子载波间隔为3。这样接收资源单元分配信息的设备能够根据该资源单元分配信息，确定该20MHz包括离散RU，以及该离散26-tone RU的频率范围。
在另一些实施例中，资源单元分配信息也可以指示仅离散RU的各个子载波的索引，而不必指示起始子载波的索引、结束子载波的索引或子载波间隔。
在本申请的一些可选的实施例中，资源调度信息还包括RU类型指示信息。这样，站点能够确定分配给自己的RU是离散RU还是连续RU，从而能够准确地获得分配给自己的RU的子载波的位置。
在下行多用户传输的场景下，PPDU的信令字段包括RU类型指示信息，该RU类型指示信息也可以理解为离散RU/连续RU指示信息。具体地，PPDU的信令字段包括通用-信令字段通用信令字段U-SIG(universal SIG，U-SIG)和极高吞吐率信令字段(extremely high throughput，EHT-SIG)。EHT-SIG包括公共字段和用户特定字段。
在一种可能的实现方式中，U-SIG或公共字段包括RU类型指示信息，用于指示该带宽包括的RU均为离散RU或均为连续RU。
这样，能够指示接收端带宽包括的RU均为离散RU或均为连续RU，从而能够使得接收端能够按照离散RU或连续RU与子载波的对应关系，读取资源单元分配信息。RU类型指示信息指示带宽包括的RU均为离散RU时，带宽可以仅包括离散RU，也可以包括离散RU和特殊的连续RU。
在另一种可能的实现方式中，用户字段包括RU类型指示信息，用于指示该用户字段对应的站点分配的RU为离散RU或连续RU。
这样，带宽能够支持离散RU和连续RU的混合传输，也即带宽可既包括离散RU也包括连续RU。而且，用户字段中的RU类型指示信息使得接收端能够确定自己被分配的RU为离散RU还是连续RU，从而能够使得接收端(例如站点)能够按照离散RU或连续RU与子载波的对应关系，读取资源单元分配信息，以准确获取分配给自己的资源单元的子载波范围。
例如，带宽为20MHz，该20MHz依次包括离散52-tone RU、离散52-tone RU、连续26-tone RU，连续52-tone RU和连续52-tone RU，分别分配给站点1-5。资源单元分配子字段为索引表6中的索引00001111。站点1和站点2的用户字段中的RU类型指示信息指示RU类型为离散RU，站点3、站点4和站点5的用户字段中的RU类型指示信息指示RU类型为连续RU。这样站点1和站点2能够按照离散RU与子载波的对应关系，读取资源单元分配信息，确定自己被分配的离散RU的子载波范围以及导频子载波在带宽中的位置；站点3、站点4和站点5能够按照连续RU与子载波的对应关系，读取资源单元分配信息，确定自己被分配的离散RU的子载波范围以及导频子载波在带宽中的位置。
在上行多用户传输的场景下，接入点向站点发送的触发帧中包括RU类型指示信息。
在一种可能的实现方式中，触发帧中包括公共字段和用户信息列表字段。在触发帧中的公共字段包括RU类型指示信息，用于指示该带宽包括的RU均为离散RU或均为连续 RU。RU类型指示信息指示带宽包括的RU均为离散RU时，带宽可以仅包括离散RU，也可以包括离散RU和特殊的连续RU。
这样，能够指示接收端带宽包括的RU为哪种RU，从而能够使得接收端能够按照离散RU或连续RU与子载波的对应关系，获取资源单元分配信息。RU类型指示信息指示带宽包括的RU均为离散RU时，带宽可以仅包括离散RU，也可以包括离散RU和特殊的连续RU。
在另一种可能的实现方式中，触发帧包括用户信息列表字段，该用户信息列表字段包括一个或多个用户字段，用户字段包括RU类型指示信息，用于指示该用户字段对应的站点分配的RU为离散RU或连续RU。
这样，带宽能够支持离散RU和连续RU的混合传输，也即带宽可既包括离散RU也包括连续RU。而且，用户字段中的RU类型指示信息使得接收端能够确定自己被分配的RU为离散RU还是连续RU，从而能够使得接收端能够按照离散RU或连续RU与子载波的对应关系，获取资源单元分配信息，以准确获取分配给自己的资源单元的子载波范围。
在又一种可能的实现方式中，触发帧包括用户信息列表字段，该用户信息列表字段包括多个用户字段以及一个特殊用户字段。该特殊用户字段包括的站点标识为特殊站点标识。该特殊站点标识例如可以为但不限于2046。该特殊用户字段用于指示该特殊用户字段之前的用户字段对应的站点被分配的RU为离散RU，该特殊用户字段之后的用户字段对应的站点被分配的RU为连续RU；或者。该特殊用户字段用于指示该特殊用户字段之前的用户字段对应的站点被分配的RU为连续RU，该特殊用户字段之后的用户字段对应的站点被分配的RU为离散RU。
这样，若仅有部分站点被分配的RU包括离散RU，那么在触发帧中，该部分被分配的RU包括离散RU的站点的用户字段也不需要额外的比特承载RU类型指示信息，该部分被分配的RU包括离散RU的站点能够根据特殊用户字段，确定自己被分配的RU是否为离散RU，从而能够节省用户字段的开销。
如图8所示的PPDU的结构示意图。PPDU包括传统短训练字段(Legacy Short Training Field，L-STF)、传统长训练字段(Legacy Long Training Field，L-LTF)、传统信令字段(Legacy Signal Field，L-SIG)、重复传统信令字段(RL-SIG)、通用信令字段U-SIG(universal SIG，U-SIG)、超高吞吐率信令字段或极高吞吐率信令字段(extremely high throughput，EHT-SIG)、EHT短训练字段(EHT-STF)、EHT长训练字段(EHT-LTF)和数据(data)。其中，L-STF、L-LTF、L-SIG、RL-SIG、U-SIG、EHT-SIG、EHT-STF、EHT-LTF为PPDU的物理层头部(或称前序部分)中的部分结构。
L-STF，L-LTF，L-SIG可理解为传统前导码字段，用于保证新设备同传统设备的共存。RL-SIG用于增强传统信令字段的可靠性。
U-SIG和EHT-SIG为信令字段。U-SIG用于携带一些公共信息。EHT-SIG中包括资源分配信息、用户信息以及指示数据解调的信息等。EHT-SIG中可指示EHT-STF,EHT-LTF以及Data字段按照离散RU传输。这样便于接收端按照离散RU的接收方式接收EHT-STF,EHT-LTF以及Data字段传输。
在一种可选方案中，在上行多用户传输的场景下，带宽大于或等于40MHz。一个站点被分配的RU包括离散RU，且该离散RU包括多个子RU，多个子RU中的每个子RU分别位于带宽的不同的20MHz内。被分配该离散RU的站点向接入点传输PPDU。具体地，站点在被分配的离散RU的多个子RU所在的20MHz传输PPDU的传统前导码部分，这样能够扩大传统前导码的发送带宽，从而提升传统前导码的发送功率。一个20MHz上的传统前导码也对位于该20MHz上的子RU进行了保护。
在带宽包括离散RU的场景下，PPDU中的EHT-LTF除保护间隔外符号长度为12.8微秒(4X符号)，或者6.4微秒(2X符号)。
可选的，PPDU的接收端，例如站点，在进行信道估计时，不进行平滑操作。这样避免因离散RU的子载波不连续而导致信道估计不准确。
进一步地，如图9所示的PPDU的发送过程示意图，在PPDU的发送端发送PPDU的过程中，进行空频映射时，空频映射中频率的映射需要按照离散RU的子载波进行映射。
对应的，在PPDU的接收端接收PPDU的过程中，进行空频逆映射时，空频逆映射中频率的映射需要按照离散RU的子载波进行逆映射。
可选的，AP与STA之间可在进行关联时，通过关联请求帧、关联响应帧或信标帧中的至少一种进行协商，以协商是否支持离散RU。这样，可以灵活地选择是否为用户分配离散RU，从而使得资源单元的分配方式更灵活。
上述本申请提供的实施例中，分别从接入点、站点的角度对本申请实施例提供的方法进行了介绍。为了实现上述本申请实施例提供的方法中的各功能，接入点、站点可以包括硬件结构、软件模块，以硬件结构、软件模块、或硬件结构加软件模块的形式来实现上述各功能。上述各功能中的某个功能可以以硬件结构、软件模块、或者硬件结构加软件模块的方式来执行。
如图10所示的资源调度信息的发送装置的结构示意图，本申请实施例的资源调度信息的发送装置1000包括处理单元1001和发送单元1002，处理单元1001用于基于待分配的频域资源被划分的多个资源单元，生成资源调度信息；所述资源调度信息包括：用于指示一个或多个资源单元的资源单元分配信息和被分配所述一个或多个资源单元的站点的站点信息，其中，一个站点被分配的所述一个或多个资源单元中，包括至少一个离散资源单元，所述离散资源单元包括多个在频域上离散的子载波组；一个所述子载波组包括一个子载波，或者至少包括两个连续的子载波；发送单元1002用于发送所述资源调度信息。
该资源调度信息的发送装置1000为一种通信装置，该通信装置例如可以为图2所示的通信装置200。该通信装置可以为站点也可以为接入点。例如，该资源调度信息的发送装置的处理单元1001可部署在通信装置200的处理器201，该资源调度信息的发送装置的发送单元1002可部署在通信装置的收发器205。
如图11所示的资源调度信息的发送装置的结构示意图本申请实施例的资源调度信息的接收装置1100，包括接收单元1101和处理单元1102，接收单元1101用于接收资源调度信息，所述资源调度信息包括：用于指示一个或多个资源单元的资源单元分配信息和被分配 所述一个或多个资源单元的站点的站点信息，其中，一个站点被分配的所述一个或多个资源单元中，包括至少一个离散资源单元，所述离散资源单元包括多个在频域上离散的子载波组；一个所述子载波组包括一个子载波，或者至少包括两个连续的子载波；处理单元1102用于根据所述资源调度信息确定资源单元的分配情况。
该资源调度信息的接收装置1100为一种通信装置，该通信装置例如可以为图2所示的通信装置200。该通信装置可以为站点也可以为接入点。例如，该资源调度信息的接收装置的处理单元1101可部署在通信装置的处理器201，该资源调度信息的接收装置的发送单元1102可部署在通信装置的收发器205。
本申请实施例的技术方案中，定义了离散RU，并能够实现给站点分配离散的RU，也即能够实现将在频域上离散的多个子载波或多个子载波组分配给一个站点，使得站点所被分配的频域资源更灵活，不局限于一段或两段连续的频域资源，从而可以更充分、更灵活的利用频域资源，提升单个用户所被分配的RU的频率多样性，单个RU的子载波覆盖的频率范围更广，从而能够提升传输的可靠性。
可选的，离散RU包括N个子载波。该离散RU所占的MHz数，大于子载波的数量为N的连续RU所占的MHz数。MHz数的最小粒度为1。
离散RU所占的MHz数是指离散RU的N个子载波，所占的MHz数。带宽包括多个MHz，一个MHz上，分布有离散RU的至少一个子载波，即使该离散RU的子载波并没有占满该一个MHz，该一个MHz计入离散RU所占的MHz数。
最大功率谱密度是指1MHz的最大发送功率。最大功率谱密度的最小粒度为1MHz。
在不改变1MHz的发送功率的情况下，对于包含相同数量的子载波的离散RU和连续RU，离散RU所占的MHz数，大于连续RU所占的MHz数。这样在最大功率谱密度相同的情况下，离散RU的总发送功率高于连续RU的总发送功率。而且，相比于连续RU，采用离散RU进行数据传输时，能够增大单个RU的发送功率，从而增加单个子载波上的发送功率，提升了等效信噪比(singal to noise ratio，SNR)。
应理解，上述资源调度方法的各实施例的相关描述，也适用本申请实施例的资源调度信息的发送装置1000和资源调度信息的接收装置1100，此处不再重复描述。
本申请实施例还提供了一种计算机可读存储介质，其上存储有计算机程序，该计算机可读存储介质被计算机执行时实现上述任一方法实施例的功能。
本申请实施例还提供了一种计算机程序产品，该计算机程序产品被计算机执行时实现上述任一方法实施例的功能。
本申请实施例还提供一种处理器，用于执行上述任一方法实施例中的可由资源调度信息的发送装置执行的步骤或用于执行上述任一方法实施例中的可由资源调度信息的接收装置执行的步骤。在执行这些方法的过程中，上述方法中有关发送上述信息和接收上述信息的过程，可以理解为由处理器输出上述信息的过程，以及处理器接收输入的上述信息过程。具体来说，在输出上述信息时，处理器将该上述信息输出给收发器，以便由收发器进行发射。更进一步的，该上述信息在由处理器输出之后，还可能需要进行其他的处理，然后才到达收发器。类似的，处理器接收输入的上述信息时，收发器接收该上述信息，并将其输入处理器。更进一步的，在收发器收到该上述信息之后，该上述信息可能需要进行其他的 处理，然后才输入处理器。
如此一来，对于处理器所涉及的发射、发送和接收等操作，如果没有特殊说明，或者，如果未与其在相关描述中的实际作用或者内在逻辑相抵触，则均可以更加一般性的理解为处理器输出和接收、输入等操作，而不是直接由射频电路和天线所进行的发射、发送和接收操作。
在具体实现过程中，上述处理器可以是专门用于执行这些方法的处理器，也可以是执行存储器中的计算机指令来执行这些方法的处理器，例如通用处理器。上述存储器可以为非瞬时性(non-transitory)存储器，例如只读存储器(read only memory，ROM)，其可以与处理器集成在同一块芯片上，也可以分别设置在不同的芯片上，本发明实施例对存储器的类型以及存储器与处理器的设置方式不做限定。
本申请实施例还提供一种芯片系统，该芯片系统包括处理器和接口，用于支持通信传输设备实现上述任一方法实施例中接入点或站点所涉及的功能，例如，确定或处理上述方法中所涉及的数据和信息中的至少一种。在一种可能的设计中，所述芯片系统还包括存储器，所述存储器，用于保存前述通信装置的必要的信息和数据。该芯片系统，可以由芯片构成，也可以包括芯片和其他分立器件。
本申请实施例提供了一种功能实体，该功能实体用于实现上述的资源调度方法。
还应理解，本文中涉及的第一、第二、第三、第四以及各种数字编号仅为描述方便进行的区分，并不用来限制本申请的范围。
应理解，本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
应理解，在本申请的各种实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的 部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
本申请实施例方法中的步骤可以根据实际需要进行顺序调整、合并和删减。
本申请实施例装置中的模块可以根据实际需要进行合并、划分和删减。
以上所述，以上实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的范围。

Claims (25)

  1. 一种资源调度信息的发送装置，其特征在于，包括处理单元和发送单元，
    所述处理单元用于基于待分配的频域资源被划分的多个资源单元，生成资源调度信息；所述资源调度信息包括：用于指示一个或多个资源单元的资源单元分配信息和被分配所述一个或多个资源单元的站点的站点信息，其中，一个站点被分配的所述一个或多个资源单元中，包括至少一个离散资源单元，所述离散资源单元包括多个在频域上离散的子载波组；一个所述子载波组包括一个子载波，或者至少包括两个连续的子载波；
    所述发送单元用于发送所述资源调度信息。
  2. 一种资源调度信息的接收装置，其特征在于，包括接收单元和处理单元，
    所述接收单元用于接收资源调度信息，所述资源调度信息包括：用于指示一个或多个资源单元的资源单元分配信息和被分配所述一个或多个资源单元的站点的站点信息，其中，一个站点被分配的所述一个或多个资源单元中，包括至少一个离散资源单元，所述离散资源单元包括多个在频域上离散的子载波组；一个所述子载波组包括一个子载波，或者至少包括两个连续的子载波；
    所述处理单元用于根据所述资源调度信息确定资源单元的分配情况。
  3. 如权利要求1或2所述的装置，其特征在于，所述一个站点被分配的至少一个离散资源单元中，包括导频子载波。
  4. 如权利要求1-3任一项所述的装置，其特征在于，所述离散资源单元中的导频子载波的位置，与该导频子载波作为连续资源单元中的导频子载波时的位置相同。
  5. 如权利要求1或2所述的装置，其特征在于，所述离散资源单元包括的多个离散的子载波组中，两两相邻的子载波组之间间隔的子载波的数量相同。
  6. 如权利要求1或2所述的装置，其特征在于，每个所述子载波组包括的子载波的数量相同，或者至少有两个子载波组包括的子载波的数量不同。
  7. 如权利要求5或6所述的装置，其特征在于，所述资源单元分配信息指示所述离散资源单元的索引。
  8. 如权利要求5或6所述的装置，其特征在于，所述资源单元分配信息用于指示所述离散资源单元中，起始子载波的索引和子载波间隔；或所述资源单元分配信息用于指示所述离散资源单元中，结束子载波的索引和子载波间隔；
    其中，所述起始子载波为所述离散资源单元的最低频率的子载波，所述结束子载波为所述离散资源单元的最高频率的子载波，所述子载波间隔用于指示所述离散资源单元中， 两两相邻子载波之间间隔的属于其他资源单元的子载波的数量。
  9. 如权利要求5或6所述的装置，其特征在于，所述资源单元分配信息用于指示所述离散资源单元中，起始子载波组中第一个子载波的索引，子载波组中包括的子载波的数量，子载波组间隔；或者所述资源单元分配信息用于指示所述离散资源单元中，起始子载波组中最后一个子载波的索引，子载波组中包括的子载波的数量，子载波组间隔；
    其中，所述起始子载波组为所述离散单元的最低频率的子载波组，所述子载波组间隔用于指示两两相邻子载波组之间间隔的子载波的数量。
  10. 如权利要求1至9中任一项所述的装置，其特征在于，所述资源调度信息还包括资源单元类型指示信息，所述资源单元类型指示信息用于指示给所述站点分配的资源单元是离散资源单元还是连续资源单元。
  11. 如权利要求1至10任一项所述的装置，其特征在于，所述离散资源单元至少包括26个子载波。
  12. 一种资源调度方法，其特征在于，包括：
    基于待分配的频域资源被划分的多个资源单元，生成资源调度信息；所述资源调度信息包括：用于指示一个或多个资源单元的资源单元分配信息和被分配所述一个或多个资源单元的站点的站点信息，其中，一个站点被分配的所述一个或多个资源单元中，包括至少一个离散资源单元，所述离散资源单元包括多个在频域上离散的子载波组；一个所述子载波组包括一个子载波，或者至少包括两个连续的子载波；
    发送所述资源调度信息。
  13. 一种资源调度信息获取方法，其特征在于，包括：
    接收资源调度信息，所述资源调度信息包括：用于指示一个或多个资源单元的资源单元分配信息和被分配所述一个或多个资源单元的站点的站点信息，其中，一个站点被分配的所述一个或多个资源单元中，包括至少一个离散资源单元，所述离散资源单元包括多个在频域上离散的子载波组；一个所述子载波组包括一个子载波，或者至少包括两个连续的子载波；
    根据所述资源调度信息确定资源单元的分配情况。
  14. 如权利要求12或13所述的方法，其特征在于，所述一个站点被分配的至少一个离散资源单元中，包括导频子载波。
  15. 如权利要求12-14任一项所述的方法，其特征在于，所述离散资源单元中的导频子载波的位置，与该导频子载波作为连续资源单元中的导频子载波时的位置相同。
  16. 如权利要求12或13所述的方法，其特征在于，所述离散资源单元包括的多个离散的子载波组中，两两相邻的子载波组之间间隔的子载波的数量相同。
  17. 如权利要求12或13所述的方法，其特征在于，每个所述子载波组包括的子载波的数量相同，或者至少有两个子载波组包括的子载波的数量不同。
  18. 如权利要求16或17所述的方法，其特征在于，所述资源单元分配信息指示所述离散资源单元的索引。
  19. 如权利要求16或17所述的方法，其特征在于，所述资源单元分配信息用于指示所述离散资源单元中，起始子载波的索引和子载波间隔；或所述资源单元分配信息用于指示所述离散资源单元中，结束子载波的索引和子载波间隔；
    其中，所述起始子载波为所述离散资源单元的最低频率的子载波，所述结束子载波为所述离散资源单元的最高频率的子载波，所述子载波间隔用于指示所述离散资源单元中，两两相邻子载波之间间隔的属于其他资源单元的子载波的数量。
  20. 如权利要求16或17所述的方法，其特征在于，所述资源单元分配信息用于指示所述离散资源单元中，起始子载波组中第一个子载波的索引，子载波组中包括的子载波的数量，子载波组间隔；或者所述资源单元分配信息用于指示所述离散资源单元中，起始子载波组中最后一个子载波的索引，子载波组中包括的子载波的数量，子载波组间隔；
    其中，所述起始子载波组为所述离散单元的最低频率的子载波组，所述子载波组间隔用于指示两两相邻子载波组之间间隔的子载波的数量。
  21. 如权利要求12至20中任一项所述的方法，其特征在于，所述资源调度信息还包括资源单元类型指示信息，所述资源单元类型指示信息用于指示给所述站点分配的资源单元是离散资源单元还是连续资源单元。
  22. 如权利要求12至21任一项所述的方法，其特征在于，所述离散资源单元至少包括26个子载波。
  23. 一种资源调度信息的传输装置，其特征在于，所述资源调度信息的发送装置包括：处理器和收发器，当所述处理器执行所述存储器中的计算机程序或指令时，使得权利要求12-22任一项所述方法被执行。
  24. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质中存储有计算机指令，所述计算机指令指示通信装置执行权利要求1-10所述的方法，或执行权利要求12-22所述的方法。
  25. 一种包含指令的计算机程序产品，当所述指令在计算机上运行时，使得所述计算机执行权利要求12-22所述的方法。
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WO2024186034A1 (ko) * 2023-03-06 2024-09-12 엘지전자 주식회사 무선랜 시스템에서 분산된 자원 유닛 톤 플랜 기반 송신 또는 수신 방법 및 장치
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WO2024186044A1 (ko) * 2023-03-09 2024-09-12 엘지전자 주식회사 무선랜 시스템에서 분산된 자원 유닛 톤 플랜 기반 송신 또는 수신 방법 및 장치

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